Croc-Spam!
What sucks on the other T4s?
Superior Command allows you to field 5 shermans at a time, get them MGs and field repairs, that might be a considerable force.
NGV's bonus is making vehicles stronger against infantry overall, the Pershing can actually follow circling infantry squads, quads rape shreckers more effectively, and such.
Oh, and if I forgot to mention:
Croc-Spam!
