It is not a tank, it is simply a variant of self-propelled artillery.
Nice technical description. Superheavies always win the on cool aspect, less so when they need to move using civilian infrastructure. Bridges, roads and the like don't particularly like those things :)
Straight forward enough, though there are very few advantages to a twin barrel tank.
In the Battletech universe, where 1-hit kills are not the standard, it makes sense, but in the modern(ish) world where a single MBT hit is generally a kill, a second barrel is unnecessary and a waste of space to use for ammo.
It could allow you to cycle between round types faster though, Go to Comment