Oftopic; God dang brumbarr is way to powerfull.
'Ah a pack? Who cares, one-shotting it anyway'
Most Soviet vehicles do this to all German infantry. So yes, pay back is warranted.
But like someone else said, 4v4 is highly dependent on which team sucks less. The oshteer is particularly unforgiving of poor teammates, especially in the early game. The only way I have lost Elefants is through an enemy tank pincer movement followed by Shrek holding infantry crawling up my flank as I fall back, or a mass AT guns rushing a flank.