Villarreal playing well and topping the table depends on the form that Barcelona and Real Madrid are in because this are always the favourite in all lehe Liga sessions. If real Madrid doesn't play well to retain their position in the table, they won't be able to become the league champion because Barcelona are always going to be the favourite to win the seasons league title. Real Madrid couldn't win the champions league and also the league title last season but this season, they'll want to go home with a trophy and I think the best chance of them winning something is their league title and not even the champions league.
Villarreal are still playing well with the team and are at the top of the points table. But it should be remembered that all the teams have only played 2 matches of the season. At the moment, the task of the teams should be to identify their weaknesses and turn them into strengths rather than winning matches. In the case of Villarreal, I have big doubts about their consistency. I am still not sure how long they will play well. I have seen inconsistent performances from them most of the time. Real Madrid and Barcelona should be the best choices to win the league title. Barcelona in particular has a better chance.