It was a decent goal, particularly because he held off and turned the defender. Yes the defender probably could have done better, but in that position, the striker has to be clever to not foul the defender, not give the ref any doubt, while also maintaining the ball and finishing it (on his weaker side).
I've been playing striker, and when a defender attacks you from the back, it is not easy in the least to keep the ball and get into a goal scoring opportunity.