Which do you think is more gifted overall? The Greek Freak - Giannis or Zion who even though is too heavy at 285 lbs but can freely move around, jumps so high for a dunk and even a block and very very agile for his frame?
We will never know unless Zion play with the big boys. The NBA is very different from college basketball, we have seen a lot of high potential picks in the previous years that went bust when they enter the league.
I remember Darius Miles, very athletic in his college days, dunking on everyone, however, when he enter the league, he still have the same game, but we all know that you can't just jump over any players in the NBA, it's not that sustainable and you need to developed.
So we need to see how Zion's body will react to the 80++ games in the NBA and see if he can still maintain that athleticism.
Yeah you can't really compare the reigning mvp to someone, though obviously gifted, that hasn't been tried before. The summer league is a hell lot different from the actual season. The highlights you're seeing in youtube is against boys compared to the actual competition when the likes of kawhi or pat beverly is in his face.