Boring....Borat. Other than pronunciation, the two are polar opposites.
Following people around with a camera is nothing new. Following people aruond with a camera, when they think you're from a foreign country, and you act as Sexist, Homophobic, or Racist as you want......AND YOU GET THEM TO AGREE WITH YOU, AND SAY OFFENSIVE SHIT AS WELL......is definitely new.
Comparing Borat to Tom Green is like comparing Football to Baseball. They both have a ball and a field, but other than that, not a whole lot. And liking one sure as shit won't make you like the other.....