Over the four championship years (excluding that one bad year), the team went 102-30 (W/L). That's pretty damn good for a league with such parity as the NBL (though the Blowout troll wouldn’t agree) due to points cap/salary cap etc. 2012-13 the Breakers were scary good - 24-4 in the Regular Season and a 4-0 sweep in the playoffs (won by 17, 11, 12 and 4 points).
The three year run (10 to 11, 11 to 12 and 12 to 13) alone would be enough to label them as perhaps the greatest dynasty IMO – over that time, they went 79-21. From Round 13 (11-12) to the end of the 2012-2013 season, they went 43-7. The winning margins in that 2012-13 season were crazy too – 30, 25, 17, 17, 18, 21, 30, 30, 19, 14 etc.
It’s hard to cross compare a "dynasty" as teams within each era have had different issues/problems to deal with – I will say that any type of consistent winner in the modern era as the Breakers have done is quite remarkable given the parity measures that existed.