I'd have to agree. Olivier would have been a much better fit for this house. 1950's Couture does not suit Raf, truthfully. His last several collections at Jil Sander certainly toyed with that look, and more successfully there than here, but even then, it felt out of character.
Olivier is the master of taking all the tropes of 1950's Couture and, without losing the integrity of the original shapes and silhouettes, rendering them with such lightness and delicacy that the end result often times ended up looking more contemporary than a pair of jeans and a t-shirt (and since his tenure at Theory, Olivier has certainly proved that he's capable of making a mean pair of jeans, too)!
A missed opportunity, in my opinion.