And if the det values are true then i got to adjust my gear all over again as going by this thread det is bad

Which then leads to spell speed and crit being stacked..... But what i never understood is if spell speed was bad.. Why did black mages stacked it always? And this is in 2.0 and 3.0 (they only had leylines in 3.0)

And they had firestarter and thundercloud procs... But yet still stack speed