Well being a biker for 31 uninterrupted years I wouldn`t call 128 mph average speed mundane but I know you mean a its the norm.
I am blessed, no cursed with the lunatic gene with the provenance to prove it and I have nothing but admiration for the guys that take part in the TT.
They are the modern equivalent of gladiators, dicing with death every second of the way.
Just to make an observation for those who don`t ride, a motorcycle takes up a very similar space in a corner to a car as the rider and motorcycle is in effect lying down.
Basic physics dictates that a car can take a corner at a higher speed than a motorcycle as it has a massive contact patch on the road and the ability to spin and slide without falling off. That coupled to some serious HP and the driver to go with it its no surprise.
I`m fast enough on a bike to scrape the pegs and use 98% of the tread ( no chicken strips ) and sometimes all of the tread followed by pain but I know I can take the same corners a little quicker in the Cooper, it just needs a good run up