Honestly, I can't think of a single thing that Sanogo is better at than Akpom; Akpom has a real turn of pace, he can hit the ball cleanly which is something we are yet to see Sanogo do once, he can control the ball, he can pass the ball, he moves well, and he is good at holding the ball up. Sanogo may be better at heading, but even that is debatable. Akpom is just a better player in pretty much every aspect.
As for Bellerin, I am not basing my opinion on this game; every time he plays you can see he is an excellent passer in the final third, that he makes great runs both on the inside and the outside, that his crosses have a thought behind them every time, and that he is very inventive with his use of the ball. I just haven't seen how he copes when he is forced to defend for long spells.
