I got bored, so I decided to get % chance at ROCT drops. So assuming that I didn't make any stupid mistakes and that Ultima uses the same file I have.
Reward
71.00% photon drop
04.35% Yasmikov 9000m
02.90% Samba Maracas
02.90% Earth Wand: Brownie
02.90% Valkyrie
02.90% Yasha
02.90% Red Sword
02.90% Evil Curst
02.90% Nug2000-Bazooka
04.35% Raikiri
Attribute Amount
03% 85
06% 80
05% 75
05% 70
05% 65
05% 60
05% 55
05% 50
05