Soccer betting vs Mahjong

Which is more "sin-ful"?
both are types of gambling, just that mahjong got more interaction and Soccer betting is just about team analysis, gut feel, and luck.
u know u dun have luck when the team u wanted to bet on won, but u didn't bet...
u know u're even more down on your luck when u lose $90(an insane amt) on mahjong...
when all u did was just to give der one 5 "tai" =$10 then all the rest ppl just "zi-mo"
then when u try to bet on soccer to cover your loss, your fren tells u that u cant enter the bet anymore.
sianz...