The Brazilian centre back was in good form against the Eagles, but frustrated that we could not convert our domination of the ball into goals.
"It was a typical Premier League game," he told Arsenal.com. "It's always difficult against a strong opponent with a low block, just waiting for the counter-attacks.
"I think we could have scored some goals and that's frustrating. In these kinds of games, if you score one, you can score two or three but until you break the low block of the opponent, it's going to be difficult.
"It's up to us to try to find some new solutions and that's frustrating because I think we could do it in that game.
"OK, I'm happy [with the clean sheet] but I prefer to win rather than just keeping a clean sheet.
"Of course for the long process it's always good to continue to keep clean sheets and improve our defensive side, but I will always trade a clean sheet for a victory because I prefer the collective."
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