I reckon the ZX10/GSXR1/R1 has always been sleeping giants.
I've lost count of the times I've seen these things crack the 200 mark on the dyno at a friends tuning shop, all with just a exhaust system, filter, PCIII and 2 hours of fiddling.
But unlike BMW they have normal clutch set-ups, so don't reckon the S1 will rule for long. Funny what happens at the Japanese factories when someone else wakes them from slumber.......