Another technical illogical thing:
assuming the game is indeed very CPU dependent, this means that it happens regardless of framerate. If a CPU can give smooth 30 FPS, then the amount of work need to go to 60FPS is really MINIMAL on the CPU side, you need a very small headroom since the game logic is covered.
So a CPU-capped game means that it runs pretty much the same whether you run at full HD or in 720p. More or less same FPS. Whatever videocard you throw at it, you get the same performance.
Meaning that it's pretty stupid to say that a slower CPU requires "medium settings", because if the CPU does supports "medium settings" then the GPU is able to handle by itself whatever is at high.
In short: if the game REALLY requires an i7 at max settings, then it would mean the thing runs like shit for non i7, AT ALL SETTINGS AND RESOLUTIONS.