MotoGP bikes are hardly slower than anything found on the N1 on a Sunday night.
Fastest ever speed recorded on a MotoGP bike;
http://www.motogp.com/en/news/2018/06/01/the-5-fastest-speeds-in-motogp-history/260767
Now keep in mind that Dovizioso's bike makes sacrifices in its gearing, its not geared for top end. Its geared to get around 14 corners as quick as possible.
Now lets look at a tuned Ninja H2. The H2 being a road-legal bike that comes standard with a supercharger.
https://www.sportrider.com/video-high-speed-running-kawasakis-ninja-h2-to-2269-mph#page-10
226.9 mp/h translates to 365 km/h. The tuned Ninja H2 is 9 km/h faster than the Ducati MotoGP machine. On top of this the H2 was geared for a speed run and was clocked at the end of a 1.5 mile runway. Mugello's main straight is 708 miles long and the MotoGP bike makes sacrifices in its gearing. 9 km/h difference with .800 miles more of tarmac.
Gear a MotoGP for a speed run and you are looking at 370/380 easy, maybe even more. I think this debate has gone beyond stupid now. Not sure who in their right mind would try and compare a purpose-built racing machine with a tuned road bike.