Agreed apart from the quad core needed for max graphics. Quad core is only if you want lots of mods
Edit : Also there is no way they will reccomend an I7, that's completely unnecessary. I5 750, at the most.
I should have specified it a little bit.
My line of thought was like this:
While there's no proof of this I think the game engine foundation is the 360's CPU. That's a triple-core system. So, Dual Core CPUs would run the game just ok, but not great. 3-Core-Cpus like some AMD models and Quad Core Intel/AMD models will have all the power you need. And hexa-core CPUS won't speed up the game a whole lot, but they are going to be even better than Quad Core CPUS, anyway.
Now, by "i7" or i5 I meant the first-generation of iWhatever Cpus. Today's dual-core CPUS are much more efficient than my ancient Core 2 Duo, that's why I think C2D from 2006 is the oldest CPU you'd need, and Quad Core Cpus from 2008 if you want to get closer to the "recommended" specs.
"Quad core is only if you want lots of mods
"
And I want tons of mods, anyway