It's pretty easy to see how the PS3/360 versions are holding the PS4/X1 versions back :/ The geometry is often almost identical (but with much stronger LOD culling on the PS3). It's understandable though. If you want to make a game easily scale between gens then you have to make it easily down/up-gradable. Lower res textures, turning effects off, toning down foliage, lower IQ etc are the easiest options.
Dat PS3 image quality though.








