Well, with the longest 90mm and gold rounds the Patton is... interesting.
I had a great game for my x5, ( 1,572XP x 5) where it was looking like a bad start, so I followed a BatChat as he went crazy and headed straight for the enemy base. Broke off my run after making a bunch of hits on a Lorraine, then was chased by a T-54 back to the center where my guys could shoot at him... so I turned around and killed him.
But then I got surrounded by Type 59's in another game and had less support than it looked like (they were there, but died... without damaging anything), and the Patton was an immediate fail in that situation.
Until I get the biggest gun on it it will have to be used to support other medium tanks' pushes.