I was just looking at hackster and I noticed that at lvl 50, most classes are stronger if they lvl to 50 before class change. It is most dramatic example would be the Bi. Belt if you take median values his vitality at lvl 50 should be a whopping 69, but a lvl 50 Master's vitality is only a 49.

What gives?

Seems like then the best strategy is to class change right before TOF so you get maximum upgrade then put on all the cool armor and spells.