[JapanMS Tespia] Level 122 Paladin in El Nath

I thought Big Bang would greatly reduce the training needed to 120, but people have told me 4th job leveling is more difficult than it is now.

Also, I recall an article revealing that the grind to 200 will be cut in half. Seeing as how monsters' statistics were changed as well as experience multipliers being nerfed and/or removed, how significant is this so-called 50% reduction in exp?