https://i.imgur.com/SynNfar.jpg
third party keys. Meh really. So you can buy steam keys from a third party site...
Account sharing. Is that the family sharing thing?
Trophments. I already covered that before. If people really really enjoy them then so be it. Games can happily add their own internal challenges (be it stats, completion, or to try to force all/odd styles of play) though and reward players for them so we are now back at the "see and be seen" set. Apparently it is coming in the next few months if it matters though.
Big picture/TV stuff. 10 foot interfaces are nice but bog standard OS can still usually get it done.
Broadcasting... don't most graphics cards anybody would be using to play games have these options these days?
China spying. OK potentially a problem, though most of what I have seen thus far is minor.
Cloud saves. Because pointing my save folder at a dropbox account is hard? Apparently it is also set to drop before too long along with the trophments.
Both have cross platform account connection whatever that is.
Curation? Because there are not a billion sites with game lists and reviews on?
Both have nice data slurping it seems.
Both have DRM free options.
Both have early access if that is somehow a positive.
Forums? Again because there are not a million forums out there, or multi purpose forum sites?
Friends list and chat. Apparently both have it.
Gifting. I can see this being a missed trick and having to send my friend some money and say grab that as we are going to be playing it, or I think you will like it. A search says it is to come though.
Groups. Is this clans or something that said forums also happily solve?
Inventory support. Is that a technical support thing or
https://partner.steamgames.com/doc/features/inventory which is an API for storing a remote save really.
Linux/Mac. For the 10 people trying this sort of thing I agree Epic seeing several games drop Linux and OSX support to focus on windows for the time being could sting a bit.
Loyalty program. Apparently both lack such a thing.
Marketplace/Item trading. I remember when people were getting upset at the Diablo 3 auction house. How times have changed. Anyway nice little API I guess but nothing I would not expect a half competent dev to be able to whip up in an afternoon for their game.
Mod distribution. Has
https://www.moddb.com/ exploded while I was not looking?
Security issues. Everybody seems to have these and Steam has had plenty of howlers over the years.
Offline play. That image is out of date it seems as apparently EGS has had it for nearly half a year at this point.
Overlay. Whatever that is both seem to have it.
Paid for exclusives. Again I object to the term exclusive here as it is nothing like it was on consoles -- I can't play my megadrive games on my SNES, an identical PC (give or take the Linux and OSX types) can play the same game though without any extra hardware, subscriptions or radical software changes. Also because every game available on Steam is available on other platforms?
Player count data. Nice to have, and presumably a good tell of how much actual buzz a game has. Not particularly what I would call essential but I can see it being a downside.
Refunds both have, don't know if one is particularly nicer than the other.
Regional pricing. Apparently Epic have something now, though not quite as robust as Steam which is happy to region lock Russian versions for the poor bastards in the Baltics. I can see why it would be a concern to some (not for the purposes of this Shenmue lark) but at the same time secondary markets and all that -- if you are doing it to maybe get a few pennies and tip a few away from the pirate life so that one day when their economies grow up to be big and shiny that they will use you it is a fine plan, though not one I would say waste too much time on right now.
Screenshots. Was there a mass breakage of print screen buttons and capture software when I was not paying attention?
Streaming. Never particularly found it to be great from Steam but I can see why some would care for it, and while I already mentioned some of the OS level stuff from microsoft (RDP is good stuff) I agree MS keeps it a bit gated off from some versions of their OS (probably not those gamers are using as the memory limits of those are probably too low for them but there is scope for it not to be). I don't know what I am particularly suggesting for people here though as in most cases a large HDMI cable does what I need.
Subscription service. Apparently both lack it.
Trading cards then. Are we defending lootboxes now?
Two factor auth. I recall the magic bullet thinking that led to 2fa becoming popular the other year. I would not say leave it but I am not going to decry its absence here either. That said apparently they do have it, and even offered a nice little $10 voucher to incentivise people to use it.
Universal controller support. So for those that don't use one of the common controllers they have an option. I am not sure what the kids are using these days but is joy2key still going?
User Created Guides. There used to be this little site called gamefaqs...
User Profiles. Is this part of the see and be seen thing?
User Reviews. The initial hubub over the lack of reviews was an interesting one to me. I agree that not housing it inside speaks to a certain approach, and it is not like Steam does not have problems with bad reviews and bad policies on reviews (what was that stuff about deleting reviews mentioning the DRM and activities of the devs outside the games the other week?). However I refer back to the billion games and review sites strewn about the internet and beyond. Apparently it is also to come at some point.
Version rollback support. Most devs have pushed the latest versions for a while now but a lack of this, especially if old versions can be not obtained elsewhere, is something I would note as a negative. I like messing with older versions and playing with glitches, or possibly having it work if support for hardware was dropped or a new update breaks things.
VR support. Is that VR fad still going?
Wish lists. Along with gifting that would be a missed trick.
That would appear to be that picture done. While it did include a few things that both lack I am not sure if it is still cherry picked in some way but I will not assume malice or incompetence here as I lack evidence.