I know for a fact that thyane just turned 12, and he was doing cork 5's when he was 11. so dont criticize him because he is younger and better than you.
theres no way that kids twelve...his riding is way to mature for a 12 yr old...you can always tel the kids from the teenagers because there stronger in the air and have more cordination...hes not 12
also, thats not a cork. Not at all. But I do have good news for you; its even better. you're 'kid brother' threw down a bio 5, not a cork. bio's are supposidly harder than corks, so u can congratulate him on that.