No idea what the top speed is. I have been past 120 but it's not comfortable trying to hold on at those speeds. But the MT's not about top end, its about the torque and rideability. On my FZ1 I often hit 150 and due to the fairing it was ok. Do much over a ton on the MT and I can't even look at the speedo as theres so much going on!
I think a lot of the juddering throttle reports are due to the torque of the triple reacting faster to throttle openings much faster than the 4 cylinder bikes. Once you get the hang of it, it's much better using the throttle to adjust your corner speeds rather than touching the brakes.
The ecu maps have been updated but a recommended mod is Kevs o2 controller (search eBay) sorting out the small opening constant throttle surging.
There are ecu flashes available now, a couple of them with glowing reports.
For me its a much better bike than my FZ1.
