because he isn't. stat wise he is a normal typical legendary.
fan-base wise, he is overrated. don't think he's the strongest pokemon just because everyone else say so, or because he was in the first movie.
arceus is the strongest pokemon. as he has the highest stats, and he created the universe.
Mewtwo.
mewtwo
charizard mewtwo or eevee
Mew and Mewtwo
Well there is no strongest because every Pokemon has a weekness but a really good Pokemon is mewtwo and mew.
while you are going to become the strongest, but the Pokemon other than you is mewtwo
There is no overal strongest Pokemon in the game, but the strongest you will face will be Mewtwo.
deoxys,and mewtwo are the strongest Pokemon in "leaf green"
Probally Mew or Mewtwo
Either Arcues or Mewtwo.
in curelen cave you get mewtwo
Well, Mewtwo is a Clone of Mew so it is weaker, but Arceus is a bit better than Mew. So I guess Arceus is the strongest.