I'm pretty sure that the guys and Dana would have figured out by the time the show was done taping if Tito was just faking it....and the results speak for themselves.
Dana even said it at he end...Tito acted like a professional, came to train the guys, and really put his heart into it all...Ken came for the cash and to get a chance to fight Tito and was just goofing off.
And if Shamrock is the better fighter...why didn't he get a 3 PPV guarantee or anything else?
Once he fights Tito..he isn't even guaranteed to even get his parking validated.
Besides getting paid to do TUF...Tito was guaranteed a fight with Forest, a fight with Ken, and in august he gets a fight with Chuck or whoever holds the title then...plus gets to go 3 rounds sparring with Dana.