I think you are saying that you thought Rondon was West Brom's best player and possibly the best player on the pitch (?). Fair enough, I guess I would probably say the same based on the fact he scored their goal, it was a good goal, and they were generally quite unremarkable apart from that.
As I have already said, nobody "in a saints kit" particularly stood out.
We won the game. The fact that West Brom may have had the best player on the pitch does not mean the best team lost the game.