.
In La Liga, the only competitors are Barcelona and Real Madrid . Every year someone from Real Madrid and Barcelona is crowned champion but the English Premier League is much more varied than La Liga. It is difficult to say when any team will be the champion here. However, Barcelona is not less than Real Madrid at this stage. Now Barcelona is a full strength team. However, Barcelona defeated Real Madrid in the last match and proved that Real Madrid is the best so far.
You forget one club that is Atletico Madrid. Although Atletico Madrid is not like Real Madrid, their existence always makes it difficult for Barcelona and Real Madrid. In the last few seasons, they have experienced a decline in performance which makes them unable to spread threats to Real Madrid. But still it can't be underestimated and put them out as one of the clubs worth considering. Usually these 3 clubs always compete to be the best, but for several seasons we can't see that.