No-one would disagree that a lot of Fours were sold.
But if you look back over Yams history, they have sold a mighty lot of twins ?.
And given they were for a while the worlds largest motorcycle manufacturer, and twins of various types made up a fair bit of that production, thats a lot of twins ? Lot of them were 2 strokes, of course.
In fact, when you think about it, Nortons only made twins for 25 years, in relatively small numbers ?, and Yam have now been making them for 50+ years. Wonder what % of each are still on the road - if that is in any way relevant ?!
This reminds a bit of the discussion about the best selling bike of all time.
It was pointed out that the Honda postie bike had sold more (total) than the entire output of the british motorcycle industry all through history. And the H*nda Cub and SuperCub (stepthrough scootery things) provided basic transport in about 75% of the countries on earth - and had sold tens of MILLIONS of them. Bread and butter, bread, and butter. To do better things with...