On the TD pass, I thought that was a "legal" push off. The receiver pushed Surtain off, but did not fully extend his arms. The push kept Surtain from closing that gap with the receiver. Otherwise, I thought he looked okay for a college CB.
The second video I have seen before and it makes an interesting case. Surtain is handsy and uses his hands to help him stay with receivers. I don't think he is as handsy as Horn but it is a little bit of a concern if he gets too handsy. Nothing worse than a CB constantly getting called for holding or illegal contact giving the offense cheap first downs. But I don't think Surtain is that player. I also think these highlight videos use plays selected specifically to make the point of the analyst. No one really knows what kind of a player Surtain will be but it is clear he is better than almost every other CB coming out of college. The Cowboys only get to pick who comes out this year. It could be a weak draft, but that is what every team faces. Unfortunately for Dallas, they have a high pick but not a lot to pick from.