If I recall, I said that since both programs provide similar training, I would have to consider OSU the better program because it provides comparable training in 27 months vs. 36.
It seems that you misunderstood my previous post, so I will break it down for you. I didn't claim that OMFS residency covers a broader scope than dental school (although I think you would be hard pressed to find anyone who had a reasonable understanding of the two that would argue otherwise). I stated that oral surgery is such a broad specialty that not all programs cover the entire scope and thus, where you train greatly impacts your scope of practice. You can't take a weekend CE course to learn head and neck cancer or face lifts.
All dental schools cover endo, pros, periodontal and to some degree, implants. Scope aside, the curriculum between dental schools is nearly identical. I would wager that there us not a dental school in the country that adequately covers implant placement or restoration, leaving graduates having to seek further education anyway. As for rotary endo, it is a hell of a lot easier than hand files. Just watch the dvd that comes with the kit and go to town. If you get into trouble, it is probably because you tried to tackle a tooth that was beyond your skill level, not because your school didn't cover rotary files.
Fact is that dental school gives you a basic set of skills that enables you to go out into the world and practice dentistry, but largely leaves you unprepared to practice the breadth of the field. All recent grads, hell, all dentists must commit to continually furthering their education and skill set throughout their careers.