TUF 3 shows no indication of either fighter's skills. The show is meant to make money so they contrasted both fighters immensely to make it a good show. Shamrock was just made to look bad and Ortiz made to look good because it is the opposite of what was expected.
Training also doesnt have much effect on the fighters themselves. Some were lazy on Shamrocks team, and Tait should have won his matchup. SO you cant judge them based on TUF.
Shamrock had a neck injury AND a torn ACL fighting Tito the first time around. He lost because he tripped against Rick Franklin. It was a fight he was doing well in until he fell of course. He knocked out Kimo, who is a well versed fighter as well. The Sakuraba fight was controversial because he DID get back up.
Tito is not as badly injured as Shamrock. THis is true because first Tito wanted to pull out and then he found out that his injury wasnt that serious so he decided to stay. Ortiz has good conditioning, but who is to say that SHamrock doesnt ahve? Everyone bases conditioning on the fight Shamrock had against Fujita, but that fight was whilst he was injured, and right after he came back from the WWF. He was definetly rusty for that one. For this fight, SHamrock is ready, as is Ortiz. Shamrock changed his fighters up and is training with new people as well. THis fight can go either way, and nothing can change that.