But you also cant compare those weight classes to LHW. They dont have nearly the quantity of high caliber fighters that LHW does. I would certainly imagine that you get a title shot in those weigh classes easier.
LHW is basically equivalent to MW now for talent depth. LW and WW are by far the most stacked divisions in the UFC. Look at Edgar's entire record he had 6 quality wins in the UFC before he got a title shot and beat Jim Miller right before coming to the UFC. Maynard also had 6 quality wins before his title shot. Kenny had 4 before his second title shot. BJ was an understandable exception to that because of his history of dominance within the weight class and the title having been stripped from Sherk. Diego is really the only guy who got fast tracked to a title shot.
Bones has 4(should be 5 the hamill dq was bullshit) quality wins at LHW in the UFC. That is enough to warrant a title shot.