This is where my mentality kicks in. I can say that Person A has a higher likelihood, if only because he's doing more FATEs, but it does not equate to where he has anything higher than 3% of getting an Atma. FATE grinding or not, I look at it on per-FATE basis. 3% to get an ATMA from one, 3% to get an Atma from either of the two FATEs (instead of 4.5% of getting an Atma from two FATEs). I just don't believe in probability when it comes to actual practice.

There's that off chance that person B can get an Atma where Person A doesn't, or even person C who comes out of nowhere and gets his Atma on his first FATE (which has happened on at least 2 occasions on my end).

That's what I'm trying to get at. You could tackle 100+ FATEs and still end up with nothing. There's no sense of progress and it feel futile at times.