I've got a few tips.
Wow I appreciate the help. I got the manetric mega stone in the last competition, but didn't do well enough to get the lucario one. That tip about the attack power + is really helpful! I didn't know it boosted the score so well. I recently beat the Mioltic stage, and I think that was one of the hardest ones in a while.
Looks like my team are level 6 or 7. Except for Starmie only being level 1.
I'll have to try that meowth trick this weekend before Mega Garchomp goes away. Again, thanks for the advice. :]