I didn't mean to say it was bad, but goalies have been known to stop breakaways/penalty shots from talent even better than Kopitar from time to time.
Cory Schneider stopped Kopitar on a clean breakaway in round 1 with a little help from the clock.
If you gave Kopitar 10 clean breakaways/penalty shots against Marty, I can almost assure you that Marty would stop at least one of them, probably more.
He didn't stop the one that would had kept us in the game last night...
Which goes back to the original question, who played better last night, Marty or Quick?
If you pushed me for an answer, I would say Quick because he did a better job keeping the puck out of the net and won the game.