Like it says in the poll: Guardians and fairies don't mix!

I would say so, especially if they had a common enemy.

Can you name some of the similarities they're supposed to have

Elements for one. Will and Bloom are both red-headed leaders.

Cornelia & Stella are into fashion and shopping.
Taranee & Tecna are the group smart ones.
Haylin & Musa are both laidback and unique.
Irma & Layla are both more tomboyish.

What about Flora? Who does she have in common with?

Also, it's Aisha, not Layla anymore.
Not sure why Iginio Straffi changed her name

I guess, they would get along. off course there'll be problems but eventually they'll work them out.

I don't think they would.

They'd fight through the whole mission on who's better

Flora has her nature powers in common with Corneila.

It is Layla depending on which dub you watch. The first version I saw called he Layla so that's the name I'm going with. Sort of like Valtor vs Baltor and Sparks vs Domino.

I have no idea why they would change her name.
And why people call Valtor Baltor

I also meant her personality, not the powers

It's just a difference between the dubs. Certain things get mixed up in the translation or in some cases things are Americanized; like with Harry Potter in England it was the Philosopher's Stone and in America is was the Sorcerer's Stone. People call Valtor, Baltor because that's how it was in the 4kids dub.

Flora I feel like doesn't have much in common with the W.i.t.c.h girls besides powers. But she's kind of the odd one out since there are six Winx and 5 W.i.t.c.h girls. If anything I feel like she's more like Eylon in that Eylon is more quiet and timid.

Ooh! I found a similarity between Musa and Irma.
They both have admirers, but like someone else
Jared (from season 1) likes Musa but Musa likes Riven.
Martin likes Irma, but Irma likes Andrew.

Jako poprvé kdyby se seznámili tak by bojovali a hádali by se ale pak by začli od začátku a když budou mít podobné věci nebo stejné věci tak by se žních stali kamarádky, takže dávám ano.