My guess is that Zero is not designing their motorcycles for EV enthusiasts and "early adopters", but for the "man on the street". That is where future sales are. EV enthusiasts will buy the bikes just because they don't run on gasoline. But there are a limited number of those people. What Zero wants to do is to attract customers who just want a practical motorcycle that doesn't need gasoline, is easy to maintain and ride. How they decide to do that might not make sense to most of the people that frequent this forum. It will be interesting to see what direction they go in with the 2016 models.
Do you have any idea how expensive the parts are on the Zero's?. I started to build/convert my own bike to electric. The battery on my bike was 11 kwh and cost $5,000 AUD about 4 years ago (when the Aussie $ was worth more than the US $) but my battery is at least 3 times the size of the Zero and heavier. At the time I could have got a battery that was maybe 2/3's the size for about $30,000. My motor was 15kw peak. My controller was 400 amp, voltage is about the same as the Zero. The bike weighs 250kg.
My SR cost me $25,000 AUD this year, the battery, as I said, is 1/3 the size, and 12.5 kwh (bigger), the bike weight is 188kg and the motor is 50kw.
The battery is on the cutting edge for size and weight and so is the motor and the controller is more powerful. What Zero have achieved is amazing for the price.
It's just not possible to make an electric bike with similar performance to a petrol one for a similar price yet.
But in a few years it will be, and the electric bike will be better, more powerful and more range than a petrol bike. It all comes down to the price of the battery.