So how about you try it by using manual and than comment. Without bowser bike I would have never got the rosalina and the Mii outfitt B.
I have tried it before. That's why I said I don't like it. If I hadn't tried it then I would have given no opinion on it.
Go to youtube and watch how people are playing on WiFi.
That's nice but I don't really care. Appeals to popularity don't impress me. Everyone could think that it's the best size/bike choice and I would still play with whatever I chose.
Not to mention I have played WiFi on MarioKart Wii on more than one occasion and I almost always get 1st w/ a mid size/kart combo unless I get particularly unlucky.
And what is the vehicle? Bowser Bike.
I'll just say it again for good measure. Anyone can post up a video on youtube, and just because the popular opinion (or the selective opinion) is that a large character w/ the Bowser bike is the best doesn't mean it is or that I would use it even if it was.
Bikes only have an advantage at places that are more straight than they have turns. All of the harder tracks have far more turns than straightaways where one can make use of the wheelie ability of bikes, and if I'm pulling out the best boost from turning on almost every turn while using a kart, bikes don't even stand a chance.