Nextgen 2k looks a lot more cartoony than current gen 2k actually.
I think the body types and how the players are proportioned on next gen make the players look less realistic IMO. The body types on them look close to the same, and lighting makes everyone more colorful than current gen 2k. Also nextgen 2k can't get light skinned people right
Played it once on PS3 since I've been playing it on the PS4 and wow it's like a completely different game.
I have it downloaded on my PS3 but seriously doubt I'll ever start it up.