~ I don' agree with your opinion, we should take the reference as the basis for this topic, based on the Oxford Dictionary, it says that Gambling is "The activity or practice of playing at a game of chance for money or other stakes".
So it means that, all activities which allow us to earn money by playing like guessing scores or guessing anything is an activity with the opportunity to earn money, so it means that it's still gambling, even if it's without money (for this case is Superpicks.com) or capital at all or playing for free on that site.
I'm actually not sure about this. If you look further into the same Oxford Dictionary you can see that to gamble is "
to risk money on a card game, horse race, etc." I think this is very important part here, "to risk money". In this thread we heave agreed on that by "money" we mean anything of value, but if you put nothing of value at risk, it's not gambling.