Topic: Which pokemon is stronger,Mewtwo or Lucario?

I say Mewtwo.

Well... obviously Mewtwo. Mewtwo's a legendary Pokemon classified as part of the 'uber' tier, whereas Lucario is just a normal Pokemon.

Seems like a pointless topic.

If we are talking in terms of purely base stats, Lucario is clearly weaker than Mewtwo. The only stats that are equal are attack, but most would take advantage of their higher special attack.

Plus, most competitive Mewtwo carry Aura Sphere, which is 90 base power, super effective to Lucario, and Lucario has a measly 70 base special defense compared to Mewtwo's huge 154 special attack. Mewtwo outspeeds Lucario (unless Lucario is carrying a Choice Scarf, used Extremespeed, or has raised speed through Agility or Baton Passing), and that's good game.