CP3, Westbrook, Lillard, Conley, Lawson, Parker, Curry, Bledsoe, Dragic and Holiday are all West PG's that are better than him and would not be players whose GM's would trade for Thomas straight up. MN wouldn't trade Rubio for him either, but I don't think I can argue him being better than IT in good faith.
That's not to say he isn't a good player. His forte is really scoring creatively and getting to the line, and his feisty attitude. But not sure about him being above average in other areas.
And I don't know why we keep having arguments about Tony Parker. He runs the NBA's best, most complex offense and he does it flawlessly. He was a legit MVP candidate As recently as last year