Yes, there is a difference. Markham is better than Luigi and Johnson hasen't beaten Koscheck yet.
Dude, Marcus Davis is more than just a TUFer. If you've seen my other posts you know that I do not like Marcus Davis at all but he's got some good stand-up skills. You can't ignore the guy on Hardy's UFC resume. Beating Markham, Swick, Gono, and Davis is more impressive then Yoshida, Luigi (by far) and Koscheck..and he hasen't even beat Koscheck.
I didn't try, I just did.
You're just a cook...