Well he collapsed a Rakatan temple in PoD and he's stated to be more powerful then his previous incarnations in each novel meaning his baseline is being able to do this + the decades he's had to increase his power. Then there's his lightning which he's used to disintegrate stone in a weakened state. Similarly Vader has collapsed a cathedral of unspecified size pre prime. Bane also doesn't have any of the limitations of Vader's suit. Bane's force enhanced strength has shown to be around Vader's own as he's torn a durasteel door off its hinges. Speed you can simply look at Emp's calculations and Bane's own feat of blocking rain drops for 10 straight minutes. Then we have Bane being empowered by battle meditation and Vader being weakened by it along with Zannah's spells which, while I actually DO think Vader would be able to resist to some extent despite his traumatic past, I think makes the contest no longer in question.