Barcelona won 33 points with 12 matches they played while Real Madrid won 24 points with 11 matches so the 9 point advantage is because Real Madrid has not played the 12th match if Madrid has played it the distance between Real and Barcelona is not too far and can still be caught up but yes I have to admit Barcelona looks very tough this season and it seems they want to make up for last season's mistakes which did not appear optimally in La Liga.
It is very unfortunate that Real Madrid's 12th match had to be postponed, so that Barcelona is more confident at the top of the standings with a fairly large distance.