I am not completely sure about Wisconsin versus Ohio. If Romney gets either of them, he still wins: 271 Electoral votes with Wisconsin, 279 with Ohio (as above), 289 with both. In the above scenario, Romaney can afford to lose Colorado and still have 270.
For what it is worth, Karl Rove has eseentially the same electoral map, except he gives Iowa to Romney and I think Obama will squeek by with those 6 votes. Won't make much difference, either way.