Both are skill based yet former is considered sheer gambling while later is not. Fantasy sports has become norm, while on the other hand if people come to know that you bet on sports you'll be met with eyebrow raise.
^ that's my opinion. What's yours? Do you consider both of them same or different?
They are basically the same as I understand, and gambling is gambling, whether you are doing it on visual sports or physical sports, I personally have never placed bets on fantasy sports, and I honestly do not see the need to, since there is more than enough games to bet on on normal Sports..
But then, if you are betting on fantasy sports, or doing traditional sports betting, both are basically the same, and that is gambling.