Saban has won 4 (FOUR!) National Championships. 3 with Alabama and 1 with LSU.
Meyer has won 2 and Kelly is 0-1.
CASE CLOSED.
That's pretty simplistic. There is no wrong answer, but it's not that hard to make a convincing case for Urban Meyer.
Saban - 19 years as a college head coach
Urban Meyer- 13 years.
If Ohio State wasn't on probation in 2012, the title count would likely be 3-3. 12-1 Alabama faced 12-0 Notre Dame. Ohio State was 12-0 that season. Maybe the BCS would have found a way to sneak Alabama in, but considering Ohio State and Notre Dame are two huge, prestigious programs, I highly doubt it.
They are 2-2 head to head. 3 of those 4 games had national title implications and might as well have been part of the playoffs. Both SEC title games were #1 vs #2. Urban Meyer has a higher winning percentage.