Watching Arsenal and Bellerin, I can't help not understand those who say that currently Bellerin is better than Valencia. For someone so fast, Bellerin seems to struggle with fast players. Even Depay was able to accelerate past him a few times. To me, it seems like Bellerin awards attackers with an extra yards because he expects himself to catch up with them. Valencia hardly ever struggle in the same regard. Also, I think Valencia is a much better passer of the ball and better at bringing the ball up the pitch.
Obviously, Bellerin has all the potential and age on his side, but currently, I think we have the better right back.