Consider it a hybrid stug/panther gun. Matter of fact consider the whole kit (jagdpanzer) a improved stug.
It has increased damage, penetration, range, accursey and slightly less reload over the stug.
It does 50% extra vs norm Shermans, cromwell, cuckoo.35% increased vs jumbo, and 25% increased vs M10.
Combine that with TH APCR rounds for a wooping 202.5 damage per shot vs norm shermans and cromwell.
It has higher HP than the stug too
Do all that and yeh u has a superstug with the only weakness over a stug is that it has no MG
Edit: godamit leophone right before I was about to post.