I'm not sure how *good* anyone is at games with fixed odds.  You either get lucky or you don't.  I'm decent at sports betting, but nowhere near good enough to make a living on.  I find it to be very risky, and it just isn't worth it to me.  But I love basketball, so that's the one I'm best at.

Altcoin trading I'm not too shabby at.  I do consider that to be gambling.