Not true.
Excellent traction.
Wear is about the same for all.
However, like all tires each has different advantages.
I know Vredestain, has the best rated lateral grip.
Don't remember the rest of the top of my head.

Thanks, the information in my 2002/2003 folder must be dated - the hakka 2s look like a way to go.  I would like to add though that I think John has a valid point. Considering their ongoing support rallying in Canada Yokohama does deserve our support - I have owned their tires and they do make a quality product.