^ I wouldn't say that. I haven't seen too many teams park the bus in La Liga. In the PL, teams know when they're in for a thrashing and they accordingly defend with 10 men behind the ball, rather than try to 'play' football. And a lot of crunching challenges can go unpunished in the more physical and faster-paced PL.
That said, you could not expect a 5-horse title race in La Liga in the foreseeable future, like it is in the PL this season. In every other season as well, there are 3-4 teams involved and on their day, any team can beat any other team. The same does not apply to La Liga. There is a biiiig chasm between Barca & Ream and the rest of the 18 teams who are simply fighting for 3rd to 16th place in the league.
^ * Barca & ReaL