Performance a lot better at high speed track. To be hornest if you like to play low speed better play with Kyosho. For high speed ZH is much better. For the price after you change all the necessary parts in the Kyosho it is not much different. And the ZH come with ESC and motor too. With the included motor set the bike is very fast already.
BTW: OTO (ZH) and all 1/5 bikes use "push" type steering. Unlike kyosho, bikes with push steering will not stand up itself. You need to counter steering to make the bike stand up. The steering is very similar to helicopter's cyclic input. This is the reason most people play car can not drive bikes..... So people fly heli should be easier for them to drive bikes.