Thing is I have a video of Corey playing against John Horsfall in the Sands Open back before Corey won the US-Open and when Corey was young he had a sledgehammer break, I dont mean a "fairly hard" break, I mean he hit them as hard as any pro today and with control.
Corey has all the power in the world on the break if he chooses to use it. Instead he messes around with goofy crap.
If one takes a look at some of the most successful players in the game you will see they are mostly doing it with big breaks. Bustamente, SVB, Pagulayan, Archer's glory days, Strickland's glory days, Wu, the top players in the world tend to get there with hard controlled breaks.
The trick breakers? Corey is probably the best of them, and his record since the US Open win has been a step below his shooting skill IMO. If Corey had stuck to a powerful break I am guessing he would have won more major events then he did. Trick breaks are finnicky, the smallest thing can screw them up and one match is all it takes in the WPC and the like. The big breaks are far less finnicky and give their users more of a chance to go through the events without a hitch.