I'd say this one as it'd probably break before the battle even began. Not to mention that the only thing USSR learned from them is that multi-turreted tanks are a mess to deal with. SU-100Y wasn't much better, however that single prototype survived to this day and at least it paved a way for SU-152.
Which was more retarded; this, or the one where they slapped a naval gun on a tank chassis?
I'd say this one as it'd probably break before the battle even began. Not to mention that the only thing USSR learned from them is that multi-turreted tanks are a mess to deal with. SU-100Y wasn't much better, however that single prototype survived to this day and at least it paved a way for SU-152.