Yup, you've also got to remember that Black Ops 2 was also later than the others, albeit by only a couple of weeks here in the UK.
And one other important thing to remember is that the dev kits are cheap, someone on Gaf mentioned $3000 each which is great value even before you think about the software and middleware thrown in with it for free. It wouldn't surprise me if the PS4 and 720 dev kits are around $15-20,000 each. The PS3 dev kits around launch set publishers and developers back £18,000 each.
It's less of a gamble releasing a Wii U SKU of a multiplatform title than a PS4 or 720 SKU just because of the installed userbases involved.







