it is somewhat unfair to all the other fighters that have been racking up wins and fighting for contendership. They now have to take a backseat and continue to wait their turn, when a few of them are arguably already deserving of such a shot.
The concept does make the UFC look a bit gimmicky. But whatever, let these guys have their shot. It may be the last one they ever see, so... best of luck. Nothing against many of the TUF4 fighter, cause some of them are very good, but to cut in line like this might piss off some people.