>>34207856Barbarkley has a higher attack stat (105) and it gets Rollout and Defense Curl. Also, the Clovermon weakest to Rollout would be Fuermiga, having 30 HP and 20 Def. Not sure where you would find Fuermiga though.
If you really wanted to go all out, you could Skill Swap Huge Power or Pure Power onto your Rollout user from a Blobbos and have Helping Hand on top of that.
Pic related is the damage I found, though whether it is possible is questionable.