A preening, showy, inauthentic singer paired with a drummer of very little skill. It's fine for an art house project but it isn't music.
I think Jack White is very talented but with that particular project of his, I could not get past the facade. I might have liked them better if they had played it straight and let the music just exist. I read an interview of his early on in which he cited the blues as his major influence -- the blues of all things, the most gut-wrenching, visceral, unadorned, unpretentious musical genre there is. I do not think I can think of a musical artist today who embodies that less than Jack White.
Julian Casablancas, on the other hand, can write a pop song like nobody's business with very little artifice about it. The Strokes were a pop band plain and simple, an excellent one, and that those two bands were so frequently mentioned in the same breath always boggled my mind.