Joshua Kronengold

That's what it does. To take the example we have, if I'd hit (but not critted) with my daily 3w attack, I'd have rolled 3d10+6 (weapon damage) and added 5 to it (wisdom).

Criticals, though, maximize normal weapon damage (a really nice way, btw, of doubling the average damage, making crits much more reliable damage, and avoiding having too many extra rolls or the silliness of adding all your bonuses to damage twice from 3e; no all-1-crits!). So if I'd had a non high-crit weapon, I would have done an automatic 41 damage, no rolling needed. But the "Execution Axe" (which I picked specifically because Avengers roll crits in nearly 1 in 10 attacks, not one in 20, due to the automatic reroll) is "high crit" -- meaning it does an extra (rolled) W damage on a crit, so I had to roll for that damage and add it to 41.