A goal and Sevilla will be right back in this. It's weird how Barca and Madrid can both be terrible defensively, but the latter seem to get punished for it far more often... although that said, Madrid have been better at winning games from losing/drawing positions than Barca this season, hence the 10 point gap. Perhaps it's just a mental thing.
Win looks very likely though, although Madrid shouldn't have any problems making a 7 point gap 10 again given they play Malaga and had little trouble beating them 0-4 earlier in the season.