...Your total PPS reward (PPS%) since you've been mining on the pool is ... 106.3% PPS
...Is my understanding correct that on a PPS pool, this 106% would be impossible due to miners only ever getting paid 100% minus the PPS pool fee--2%, for example--which would always be 98%?
It seems that the only way to look at this is that they are paying a higher fee for more frequent payouts.
...and of course since this is a PPLNS pool, not a PPS pool, the variance with a small number of blocks can be quite high.