Over the past several years it has been clear that there has been almost no originality on the HD consoles and a ton of originality on mobile phones and the Nintendo DS ...
In my opinion the primary difference is development costs. If you're making a big budget blockbuster for the HD consoles and devoting $40+ Million to its development (plus an additional $40+ Million towards marketing) you're probably going to stick with an established formula in a well known genre while using a popular IP; in contrast, if you're producing a game for less than $1 million with no marketing budget you're probably going to be pretty willing to "break rules".
From what I remember, Sony was (initially) fairly hostile to developers who wanted to produce games with more modest graphics on the PS3 and for gaming to be as creative as it once was all companies have to be more open to development at all budgets for their system. Hypothetically speaking, if someone wants to make a game that looks like a high-resolution Wii game for the Wii U Nintendo should embrace it especially if it is original; and the same should be said for Microsoft and Sony with the 'XBox 720' and PS4.