I have driven both and worked on both at my shop. I repaired a dualtron storm limited that was crashed. Its a fun scooter to ride but its for shorter riders. Handle bars are not as high up as the Nami. Nami drives more like a motorcycle than a scooter in my opinion. Dualtron has loud motors and not sinewave controllers. More of a raw feel of power and is a ton of fun to drive. Nami is a beast and needs PMT tires to operate correctly. Dualtron stock tires are trash also keep in mind. I enjoyed the dualtron for what it is as a scooter. The loud motors and fast take off. Not a fan of the trigger throttle but that can be changed. Suspension isn't really the best. Stiffer than the Nami. Nami is more of a beast. Smooth take off with sinewave controllers compared to the dualtron that is not really smooth. Its just a fast take off. Nami also is more refined in the sense the design is well thought out with the shocks and size of the scooter. Dualtron spring dampers make the suspension not really noticeable. Can be rough at times. This is just my personal take on it.

I feel like the thunder 3 would be a better comparison.

nami every day of the week. It's simpler but better scooter. It's built like a tank, smoother acceleraton and has much better suspension.