"best of both worlds" -- try finding a baseball game for the PC. There's been nothing since High Heat (excluding the management games -- Out of The Park, Baseball Mogul etc)..
Otherwise I agree, I use the 360 for sports games, and the PC for strategy (Civ, AOE, Supreme commander, Supreme ruler etc, Football Manager).
I think the PS3 squeezed too much technology into the box for a games console. It's been outsold by the (outdated) Gameboy Advance in the last 3 months for goodness sake. It doesn't have enough to reach critical mass imo.