lol I really don't know where you're getting your bike knoweldge from
I've been round corners at 160mph before (bike would only do 165) is that what you clarify as slowing down?
lol and I've had the back wheel out beside me on many an occasion. Sliding easier is not an advantage, much easier to not slide at all!
Sure the majority of cars these days are front wheel drive and we all know they can't go round corners fast without understeering!