I put off running this thing for a long time because it always seemed like a german TOG - just an hp piñata. Killing them always seemed pretty straightforward. Now, apparently due to the current chaotic state of high tier play, and the general Tier 9 advantage, this seems a pretty effective tank.
3/5/7 gives lots of stuff to shoot, and sometimes the 3 tier X's are pretty soft tanks or hard tanks driven by dead red tomatoes. It doesn't work all the time, of course, but it feels more fun than the E75 just for the generall silliness of bouncing shots while aiming in on cupolas.