So whether slot of football games/sports betting, addiction is addiction and any body can get addicted playing any of this two types of gambling game, it all depends on their approach.
Yes, both are addictive.
Sports betting or slots, they're both addictive and it depends how a gambler will control themselves still if they are hooked to both games.
I've tried both games and mostly sticking to sports betting and if you're not careful enough with it. There is the likelihood that your losses will trigger you into becoming an addicted gambler.