My Brother has the Most powerful Pokemon Card!!!

My brother got the pokemon card Mega Rayquaza EX! It's supposed to be the most powerful pokemon card in the world! In case you didn't know, me and my brother collect pokemon cards. My brother likes to battle with his cards, but I like to trade. It's a really big deal to get a Mega Rayquaza because they don't make them any more. They instead have this Mega Rayquaza card that STINKS! It only does around 60 damage! That's not a lot for a Mega. My brother however, got the old card, which does 300 damage! The only other card that does that amount of damage is Mega Charizard EX. If two pokemon collecters battled with Mega Charizard and Mega Rayquaza, It would be awesome!