So what? It's a title fight and it shouldn't just be based on who's got time that night. In my opinion Mir moved down the pecking order after the loss against Brock and is pretty much the last person to deserve another title match. He looked great in his rebound fight, but a single win over a guy who is also coming off a loss shouldn't earn you a title match.
Randy Couture earnt a title shot after coming out of retirement after a loss to Chuck Liddell. I'm being a bit cynical here - I love Randy and he was awesome against Sylvia - but according to your logic he didn't deserve a shot either. Did you apply the same logic to those circumstances?