So, blame the developer and not the underpowered console?
He's...sort of right.
But no, certainly blame the console. It's the thing that is overall "worse." It's got a weaker GPU and as far as we know an equal CPU. However, as optimization and tools get better, it is very likely that we will be 1080p and things more often.
It is relevantly similar to the PS360 situation on that front.