What are the stat requirment to reach high end range?

A lot.

In all seriousness though... well over 1k attack and 400% stats to have a clean 1m range as a Mercedes. Others not sure; I don't play them.

I an finding difficulty trying to figure out the intentions of this question...Buffed range sure I can kind of understand that you'd want to compare how "easy" it is to build range on each character but unbuffed....

The intention was to figure out how much more %Main stat and watk I need to get somewhere near these high end ranges. I have rough idea how much self buff will boost my range but I don't have much clue about the raw stat I need.

I didn't want to ask buffed range because by buffed it could mean all sorts of buffs such as TaC, pots or even apples! Which will then eventually become a question of what buffs can be stacks together to boost one's range.