Will Barcelona be able to get ahead of Girona? I think it is possible. I believe right now Barcelona is performing well compared to Girona. And at the same time, Girona has dropped off a lot in terms of performance. Girona has three losses in the last 5 Matches and Barcelona has none. Girona does have some easier matches coming up.
Yes, Barcelona looks like they will be able to out perform Girona because judging from the match, of course Barcelona is superior, whereas if Girona looks at their performance, it always fluctuates, so I agree with you that Barcelona has great potential to outperform Girona and like Barcelona's match against Bilbao, the result was a 0-0 draw, but during the match Girona against Bilbao Girona lost with a score of 3-2 so in this case Xavi's troops certainly have great potential to out perform Girona.
and the this day Barcelona also managed to beat Napoli in the Champions League and I saw Barcelona's performance was good.
Girona will indeed face some easier matches and Girona will next face Getafe and it looks like Girona has the potential to win but of course we won't know what the results will be because the results of Girona's matches are very difficult to predict because sometimes Girona can draw against a weak team like formerly against Almeria.
However, Barcelona's next match will be against Atletico Madrid, of course it will not be an easy match for Barcelona, but of course this is a big challenge for Xavi.