Again,I have to agree with the others that have posted. It is just not a fair comparison. Coach Izzo and Dixon are similar in their coaching styles though. They like to have physical players and play good defense and rebound. (We seem to have gotten away from this lately).
The problem is that the talent levels are much different. Izzo is just a better recruiter and always has at least one top notch guard or point guard or both.
If somehow, however, we could assume that the rosters contained equal talent, which I don't think will ever happen, I would take Izzo as my coach, just because he has shown the ability to regularly beat higher seeded teams in the tournament on a regular basis, while we have shown a unique ability to choke to lower seeded teams on a regular basis.