Iaquinta is a dynamic striker but he's not covering a lot of the pitch. It's two different things.
Iaquinta doesn't have top of his form, he's just one weird player. I don't honestly think he's better at anything over Amauri. Well, maybe penalties but I'm not even sure about that.
He's strong but Amauri is not weaker
His technique is nothing but decent
He jumps like my grandmother so he's not shining in the air either
His shot out of the box is weak
His finishing is hilarious (yes, Amauri misses a lot but I don't think he's a worse finisher)
He has no vision whatsoever and can't do ANYTHING when it comes to one-on-one with some player
Oh yeah, he's injury prone too.
But who cares, he's Italian so let's keep him