Barozi on 03 May 2017
So far there has been zero proper releases that could be compared between those systems.
Sure you can take Lego City Undercover (last gen port) and Snake Pass (low budget indie game) and notice quite a few differences there, but the real test comes, when Swith gets an AA to AAA multiplat. We possibly have to wait until NBA 2K18 releases in September, but even then the game isn't all that demanding.
