I agree with the Oxlade-Chamberlain comparison, certainly a lot more than the Sterling one.
Sterling is tricky, plays with his head up, tries to pick out the pass and always looks to run beyond.
Ibe, on the other hand, is all about powerful running with the ball, a real physique strength with a layer of quality when he gets into the final 3rd.
Difficult to say who will end up the better. Sterling is already one of the best players in the Premier League.
I wouldn't loan out Ibe, though. I'd keep him and have him on the bench at the beginning of the season as an impact sub, like we used Moses for this season. Unlike Moses though, I think Ibe will actually make an impact and eventually force his way into the starting XI.