I think we've gotten to the point where we're trying too hard to be smart here. I 100% agree Cabrera's season is not unprecedented statistically... but he still bested all of his peers in the Triple Crown categories. Each season is it's own beast, it is still a great accomplishment. You can't take it away from him.
Although I'm not necessarily a for picking the MVP from playoff teams... Cabrera did lead his team to the playoffs, that should count for something. He hit .337 with 26 HR's, 1.074 OPS in the 2nd half of the season, great numbers... including 10 HR's in September.