He was close enough and had enough surface area to score into that power was fine in this case. Obviously, it was closer to the keeper than I had first thought and he was a tad fortunate that GK didn’t throw his hands up, but generally they try to make themselves more wide.
I like to fake to get the GK to bite, then decide how to react. A lot of times they lose their bearings just enough that you can find a side to imbalance. In the case of Iwobi, he had to react fast and smash it, so power and height was a good choice, just make sure you get it on frame and don’t hit it over the bar.