A “T” is still a “T” and and “R” is still an “R” in any romance language. If you’re talking dialects, well, the guy was born here!
So relax. either he is your cup of tea or he isn’t. Hardly worth getting excited over
http://www.youtube.com/watch?v=t6yGBp0Sb1I
As an example, check out the pronunciation of cantare at 1:27... The difference between the 'T' and the 'R' is quite subtle.