I think more people have done nothing, or even come off worse after winning KotR than done well. Austin, Owen Hart and Savage are the three that in my memory of wrestling have done well with it. When Bret won the KotR it just fed into his long standing, often boring, feud with Lawler. Booker T I think would have been better off without the King Bookah bs, Regal got caught being naughty and lost all momentum with his (and probably his best shot of a title). Sheamus somehow managed to become even more boring, Mabel launched into a match with Nash giving us one of the worst matches not involving a celebrity that they've staged at a PPV.