Okay I feel like a noobling!
I was told once upon a time, your deck size determined, how much min/art points you lost when you were raided. But I have been raiding a lot recently and this just doesn't seem to be the case.
My best raid is on Pony, he's given me almost 20,000 min/art points per raid, and I've heard others getting almost 25,000 from him (per raid).
I have recently been raiding a MSB, I thought raids would suck, but he's around rank 2000 and gives just over 8000 (about 4 times his rank, on best crit raids).
Someone clarify this for me, or link me if this has already been discussed, I couldn't find anything.