You have a fundamental misunderstanding of the term cross gen. Uncharted 4's core features don't have to be ported to PS3. Tomb Raider's did have to be ported down to 360, which means they had a lateral alteration of their engine because they did not have a significant gain in the scope they could design the game within. The game's core features, maps, AI, and much of its geometry had to be created within a scope that made them scalable to 360 in strong quality as required by the publisher from conception. No core features were done that couldn't be done on 360 because it is true cross gen. Uncharted 4 is straight up using PS4, no need to collaborate with any PS3 requirements. It isn't cross gen and its engine and scope is significantly taken out of last gen's reach across the board.
AI and level design that are impossible to scale back to last gen unmarketable quality loss? No problem for Naughty Dog on Uncharted 4, but totally not an option when Crystal had to collaborate on Nixxes limits.
So what your saying is, you have proof that Crystal dynamics and Nixxes both agreed on the limit and scope of Crystal dynamic's game specifically so that it could be ported?
Again, do you have any proof of that?
That's like saying Titanfall was kneecapped on PC and XB1(BX1 which had to make cuts of its own specifically to adhere to a decent framerate), specifically so that the 360 version could even be run, which we know isnt the case.
I wanna say I heard it in an interview with Phil back at E3.
Why don't we get this kind of whining for SFV? It's the same situation, except SFV was guaranteed to come out no matter what.
That's wrong.
Are you going to argue that Titanfall was always exclusive to XB1 permanently too?