>>57028495it’d be somewhat situational, more of a sidegrade than a straight upgrade, but it’ll still have its uses and should be given to it anyways because it’d be fun and another neat option
Accelerock - 60bp after STAB, +1 priority, SE against ice, fire, flying, and bug types, resisted by fighting, ground, and steel, nothing is immune to it
Extreme Speed - 80BP without STAB, +2 priority, SE against nothing, resisted by rock/steel, and can’t touch ghosts
Accelerock would be better against fire, ice, flying, bug, rock, and ghost types (first 4 due to being SE, last 2 because those types resist/take no damage from normal), while Extreme Speed would be better against everything else.
In short, Accelerock’s main advantage is being able to hit some common enough types super effectively while its disadvantage is lower power against mons not weak to it; also, nothing is immune to rock so you’ll always deal at least some damage
