Now there is a potential error in my calculations. It could be that I should be comparing crit damage with crit set to crit damage with offense set for crits. I'm actually kind of leaning towards it being that way. In that case, however, it would only further decrease the value of the crit damage set and would give us the formula:
((offense with set/offense with no set)-1)/ ((crit damage with set/((offense with set/offense with no set) * crit damage with no set)) -1)= cc breakpoint
I'm going to run through this with Chirrut quick to see how it affects the breakpoint.
(5622/(5622-433)-1) = 0.08344575062632491809597224898824
((2.22/((5622/(5622-433))*1.92))-1) = 0.06719694948416933475631447883316
In this scenario, the crit damage set is only increasing the value of crits by 6.7% over what the offense set is doing with crits so will never be better than an offense set ever.
So if there are any errors in my calculations, they have only increased the value of the crit damage set, they have definitely not diminished its value as others have contended.
So either the breakpoint is around 67% for a rule of thumb, or offense is just better.
My guess? I have been making an error, and offense set is always better.
