He's a very good finisher. Cool and composed infront of goal, we've seen this many times when he's put through on goal or manufactures a shooting opportunity.
His touch isn't poor, it's inconsistent, probably because he is currently too preoccupied wrestling and battling. He'll learn in time (with a good coach) how to make a yard of space without pulling, tussling and grabbing, which only serves to play into the hands of the CB.
He also takes too many touches in general, which can be coached out of him. Again, this needs one on one work with good coaches.
I don't know a huge amount about Delap. I have only seen 90mins vs us, in which he missed a very simple chance, and Arsenal, where he barely touched the ball. He has scored 12 in 68 in the Championship before this season, whilst Hojlund managed 16 in 43 last season playing in the Premier League, Champions League and Europa League...for a bit of perspective.
Both can be talented players also...there aren't too many lads play as a lone CF in the PL at 21 nowadays