In Gurps, how powerful do you need to fight a tank?

[mlangsdorf]

Originally Posted by Bathawk

I'm curious though in the "comic book" version of of defeating a tank...bending cannon barrels, tearing turrets off, taking a hit from the main gun and then wrecking it with a single punch or blast of laser vision

The DF rules for bending bars can probably be applied to bending a tank gun's turret: it's a quick contest of bender's ST versus bendee's HP + DR. A modern tank gun barrel probably weighs 2,000 to 3,000 lbs for HP 35-46 and barrel walls that are 1-2" thick, for DR 70-280, depending on you assess it.

So on the low end such as a 1960s era T-62, a ST 110 can twist the barrels without much effort. On the upper end for a T-80 or M1 Abrahms, ST 200 should be sufficient but you could make the argument for ST 340.

A flying super can get above a T-72 and go through the weak top armor, needing to penetrate DR 90 and do around 180 HP injury to bring it below 0 HP, at which point it will probably stop working in a few seconds given that it has HP 9. Based on the Ukraine war, T-72s may be Fragile: Flammable and Explosive, in which case a mere 90 points of burning or explosive damage past DR has a 80+% chance of setting it on fire, followed by an ammo explosive and turret high jump. A 6dx7 (2) bu attack, average 147 damage and halving effective DR, would be sufficient.