well in my experience I'm the second fastest plunderer in our server, and our first place is insanely fast. it's like when you competed with him while there is S and SS at the same time, you almost guarantee to get S instead of SS. though I got a few times faster than him, it would not exceed 8 times I think.I started to plunder since april btw. plunder is all about being insanely fast at clicking refresh.

Sometimes you don't even see SS in plunder window but when you check in konoha he is already attacking someone, that's how fast people in plunder business are