The bespoke ECU was the difference maker for the Japanese brands. I recollect reading the Yamaha ECU dynamically adjusted TC per corner per lap, based on Tyre wear. You could also ham fist the throttle and dump the clutch for the start and nail it, no wheelies, stalling, nothing of that sort. Without all the ride height devices and such.Even if he wanted to do that Gigi wouldn’t co-operate.
Nakamoto said years ahead that losing their bespoke ECU would cripple Honda.
I’m sure the HRC one was just as sophisticated, if not more.