Think if Archie had lost Romeo, Phinessee and Hunter in October and Archie got fired for it!! This is what happened to Alford.
While IU's initial injuries weren't quite that serious, IU's accumulation of injuries that really hurt
O'Neal is in the same ballpark as Hunter
Thyger Campbell was not that highly rated and at best was probably a similar impact loss as Race for IU (slightly lower rated, but had a year RS year)
Olesinski's absence kind of hurt, but he's never been an impact player in a competitive game. Limited De'Ron probably hurt IU more than Olensiski's complete absence hurt UCLA.
Even if UCLA's injuries were a little more significant, the bigger problem was that UCLA was getting blown out by any team with a pulse and lost to Belmont/Liberty at home. IU started tanking when Phinesee/Roberts were also injured and Davis was completely unavailable, and even with that IU was still player better than UCLA was with Alford, IU was just playing a much tougher schedule at the time so was accumulating more losses