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Another difference between Jackson and Pop's teams was their overall level of consistency.
Both were among the most dominant teams almost every year, but how often were they the most dominant? Popovich's four titles came in 1999, 2003, 2005 and 2007. If he manages to win his fifth this year, his titles are placed thirteen years apart.
Meanwhile, Jackson's teams were dominant for long periods of times. His first title came in 1990, and he followed that up winning both times in the next two years. Then from 1996 to 2002 he managed to win six times, two sets of three-peats that were interrupted during Michael Jordan's hiatus from basketball.
To top it off, Jackson won a back-to-back pair in '09 and '10.
Popovich coached some great teams, but never quite as dominant as Phil's that brought him three three-peats and one back-to-back.