Presumably the point of the luxury balls is Magic Bounce Espeon.
Actually the luxury ball is my "Mark" - if I catch a Pokemon, it'll be in a luxury ball, Espeon with Magic Bounce is only one reason I want a female with hidden ability.
The other reason is Sylveon with Pixilate and the final reason is to have both a Pixilate Sylveon and MB Espeon both hence why I want it to be female - so it has higher chance of passing hidden ability and special attack+ nature makes it better for both evolutions.
That and I wanna get every Eeveelution in a luxury ball but the non-hidden ability ones I can deal with at anytime.
EDIT: Hidden ability I want on Sylv and Espeon only. But I need a female (from the safari most likely) and that means that the user giving them has to be online in-game and then I get lucky.
My Gardevoir however has Focusblast and Thunderwave, so if a female shows up with anticipation, it'll shudder due to FB and then T-wave will aide the catching, and my Garde is modest with synch so...it's just a matter of luck and time.
And remember - if someone trades me a Female with anticipation I don't care what ball it's in. Lux only matters if I catch it myself.
O_o Did they turn the capture rate even further up for the Version Mascots this gen than they did in Gen V? I wound up catching Xerneas on my first throw using a luxury ball.
I've noticed that myself, since BW mascot legends have been easy to catch...In my case it's a bit more difficult as each lux ball is 5x the price a reg pokeball but behaves the same.
But yeah Xerneas had a really easy capture rate, strangely when i did catch Yveltal on my playthrough of Y, he was insanely hard to catch.