Mostly.

the only i like better in OUAT is ariel
i like both snow whites but in diferent ways ,same for belle
i personaly don't like mulan , aurora ,elsa and anna in the show

In general, yeah. All except Belle, who I much prefer in Disney.

^

^ In general I like them in OUAT, but not the "new" princesses (Merida, Elsa, Anna...) because they look a bit too much like cosplays, they copy the ones from the movies too closely

I love both Snow White's but I prefer the Once Upon A Time one.
I don't care much for the Once Upon A Time Cinderella and I love the Disney one.
The Disney Aurora is BORING but the Once Upon A Time one is annoying.
I LOVE both Ariel's equally!
I like the Once Upon A Time Belle but I feel like she's a bit of a doormat and is pretty bland and unmemorable for me. There are times I actually forget her but I do really like her. I love the Disney Belle.
The Once Upon A Time Mulan is so DULL and I LOVE the Disney Mulan!
The Once Upon A Time Rapunzel was a HUGE disappointment and I LOVE the Disney one.
I'm bipolar about the Disney Merida and so far I really like the Once Upon A Time version of Merida.
I dislike both versions of Anna but the Once Upon A Time version is more annoying.
I dislike both Elsa's but at least the Once Upon A Time one is more fleshed out.

OVERALL:
Disney: 6
Once Upon A Time: 3
Equally: 1

The only Once Upon A Time version I like better is Merida.