[Leep]

They are better than all the other Swedish pop rock bands.
I can’t think of any but I’m sure they are no.1.

[SeekAndFind]

There was actually a study of the music of ABBA vs. Mozart’s and Bach’s on Cardiovascular Effects.

It was entitled:

The Cardiovascular Effect of Musical Genres: A randomized controlled study on the effect of compositions by W. A. Mozart, J. Strauss, and ABBA

See here:

https://www.aerzteblatt.de/int/archive/article/179298

[CommerceComet]

They are better than all the other Swedish pop rock bands. I can’t think of any but I’m sure they are no.1.

You're on safe ground if you say ABBA sold more records than any other Swedish pop band. That's an objective fact, "better" is an opinion.

[ImJustAnotherOkie]

Bunch of meatballs.

[DoubleNickle]

Only other ones I can think of are Roxette and Ace of Base.

[KC_Conspirator]

Ace of Base