that kind of thinking, oam, is rat poison.

bama's #1 class run being easily the best roster is only true if you put at or near 100% certainty in recruiting rankings. and we all know they are flawed. in any given year, the top 5-10 are interchangeable.
since 14 recruiting class, since those are all that's on these rosters, lsu, fsu, au, osu, uga and usc have all had striaght top 10 classes. osu, fsu and lsu have had almost all top 2-3, with only 1 being outside top 5, just like bama.
i think it's highly likely that at any given year, one (or more) of those classes were better than bamas '#1' class. i find it extremely unlikely that bama's marginally higher ranking is proof that bama should never lose. at best, you could say bama is slightly better on paper, but other factors will determine likelihood of outcome.
as for favored, bama has been going since 09 sec title game i think. the opening line streak ended at 72 in 2015 @ uga, but by game time the line had shifted to bama being slight favorites on most books, with a few holding as a pickem. 112 games and counting if my math is right. but this doesn't really mean anything other than most people
think bama will win, not on who
should actually win.