I was thinking more of an ambush type situation. A plane flys over low and slow, see's where the tanks are headed, and the SU152 hits them with it's 152mm cannon. I'm not saying this is a tank you want to fight in. I think any tank we have would own it in a fight. But if the knights are attacking a town, then some of these guys hide in the town, and start killing off the other guys.
But if you are saying it has absolutely no travers, and not a limited travers then you are right. I am assuming it can travers it's gun something like 30degrees.