I don't see anything really interesting in those games, of course, a fluke can happen again with any of the top teams but realistically they are of absolutely no interest whatsoever:

Girona is one win 4 losses out of the last 5 games
Las Palmas is 4 losses, 1 draw out of 5 games
Valencia is the only one doing a bit better but they still got 12 goals scored in their 2 matches with Barca.

It's more of a thing of hoping one of the top would not play as they usually do than anything else.

Rayo vs Villarreal is a far better match with the 5th and 6th in the league clashing for a spot in the EL.