Whether a pilot of a Baron is necessarily any more smart than a pilot of a C150 is another matter (probably not, but he ought to be).
Why? It may simply be that the pilot of a Baron had sufficient pots of gold to enable him/her to do the training, whereas that of a C150/152 may not. Possessing the ME qualification doesn't make you any smarter, it just allows you another engine on your aircraft. I certainly don't have the wherewithall to do a ME qualification and I'm definitely not thick. Whatever the cause it is a very sad accident and I agree with stickand rudder that the B52 post is, to put it mildly, tasteless and wholly inappropriate.