Odd that you'd use a quote about earnings but fine, I'm sure he's good at estimating costs. That doesn't mean he has actual access to companies costs to demonstrate that the economies of scale for HD games are outweighing the reduced development cost of Wii games, but more importantly nothing that was mentioned in his post, which is where Procrastinato said he would complile the info from, said anything about costs.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.