First I would like you to know that i don't care about Metacritic, but i i would do like you said than i woul say that 75 is not a good score, and as far not good enough for all the hype the PlayStation 4 has!
I can see I'm wasting my time here but I'll reply anyway. The PS4 is clearly going to be the lead system for pretty much every console developer and has already obtained a far greater library of games then the XBOne. The WiiU is pretty much a non-factor because it has underpowered hardware and virtually zero third party support. It's a one horse race and the average consumer sees this. Just because the PS4 isn't really worth it now doesn't mean that it's all hype.