Soccer is my favorite sport in the entire world, and i'm pretty good at it.
Having said that, the correct answer in terms of athleticism is basketball.
I arrived at this answer by thinking back to all the injuries i've had and how they have hampered me far more in basketball than in soccer.
But skillwise????
Soccer easily, not even close.
It takes you MUCH longer to become skillful at dribbling a ball with your feet than it does at dribbling with your hands for obvious reasons.
And shooting with your feet vs hands?
Come on breh.
Basketball = requires more athleticism
Soccer = requires much much much more skill.