Coppell saw his side twice get back on level terms only for Torres to undo all their good work.
"I thought we had some good opportunities but the difference was obviously £20million," said Coppell. "We are disappointed. You want to play against the best players and that's where you make your reputation by stopping these people playing.
"For us to come off and he's scored three, then we are disappointed. With each goal he grew in confidence and became more expressive. For the first 45 minutes he was fairly anonymous.
"He didn't contribute much in the first half but that is the quality of £20-odd million.
"He gives them what they don't have with other players and that is just raw pace.
"A couple of times it wasn't a question of intricate play, it was just a question of kick it and run and he can run quicker than most.
"Realistically he is yet to set the world on fire in this division but as he got his goals he grew in stature. We had to take more gambles and that only opened up more avenues for him."