Just look at the rhythm. Needless to say, I love Edgar Degas.
It can be clearly seen, that the first painting is an earlier one.
In my opinion, this is a tendence that we see with great painters: as they grow older and more experienced, they don't bother to say more with more, instead, they manage to say more with less. And I think that is why the lower two are so fabulous. I just can't get enough of them.
I'm sure that sooner or later I'll take up painting.