Serious question, who had the bigger hole to get out of Mac I or II?
Mac I had a bigger hole in terms of the differential between the Buffs and the most talented teams in the conference. Oklahoma and Nebraska were light years better than CU.
But where Mac II has it tougher is with the level of conference rivals in between the bottom and the top. Jumping Arizona et al to get to a decent record and bank win on the way to start thinking about challenging Oregon/Stanford from the North & USC/UCLA in the South on talent is light years more difficult than jumping mid-80s KSU, KU, ISU, MU, OSU to position the program.
And while they didn't talk about it in the 30 for 30 piece (and a lot of us seem to conveniently forget this), not only was the CU record bad those first few years under Mac I, but the recruiting wasn't vastly improved from before and the coaching staff he originally hired wasn't the powerhouse group that went on to be head coaches. The recruiting pretty much took off after McCartney was extended despite record/controversy, and then changed his offense and overhauled his staff.