Yes and no. You can't brawl in any way shape or form... but the gun... OMG, the gun. It makes BIG holes in even Tier VI heavies and two of them can smash up even a KV-1s or an AT-2 quickly. If you are competent you can take on a STuG. I failed to be competent on Widepark last night. Sigh.
If arty spot you you are flattened so you need to camo your little heart out. I need 6th sense bad on mine.
Basically it's a hide and snipe but if they come at you one at a time you'll flatten them. In Tier IV the only things that you can't one shot are generally only two or with an unlucky roll a three - even Hetzers and Matildas. You can go head to head with lights a little as if you hit them they explode in pieces but if that then causes a visit from Whack-a-mole arty...