You care about FIP until it doesn't suit your point. How about Marquis 4.94 FIP or 4.8 K/9. If John Lannan has a 4.70 FIP he is trash and a AA pitcher in your eyes, but Marquis can have an almost 5 FIP, and he is a star.
How about Marquis 3.48 FIP in September (and that was before tonight)? Whoops, that supports the continued improvement since he returned from injury. How about my mentioning the turnaround of Lannan, and his two months spike well above his career norms, as a great thing and something that has earned him a spot in next year's rotation. Don't let the facts punch you in the face on your way out.