you are looking at it wrong breh....Floyd said he doesnt do catchweights...meaning he dont meet in between weights to fight. Manny vs Margs was a CW because Manny wanted a fight in another division even though he didnt weigh in at the division limit....so by adding a CW you dont give a fighter the opportunity to weigh in at his divisional limit. DLH-Hopkins was a CW. (just so you dont think I am picking on Manny)
CW is if Floyd asked Canelo for a JMW fight but does not allow him to use the JMW limit. He is not doing that, he is asking him to fight as a WW. Whether you agree with that or not, you are not wrong for doing so. However you would be wrong for calling it a CW.
Floyd vs Juan Manuel Marquez was a catchweight fight







