A lot of your post is 'product dependent'. Except for top end speed & range, our Deco out performed our Honda Wave 125i in every way, Torque, ride, comfort, ease of driving. Will do 90 kph, which I have no need to do. Have done 87 kph, with some throttle left.
Wife & myself on it, and performs & handles way better than the Wave did. Inclines, no problem, though don't think we've been on any over 30°. Our SUSU model is 3000w 72v50Ah, as the new version has an upgraded battery.
Charging time for ours is about 2 hours to go from ~25% back to 100%. Original promo for ours, as the new upgraded one is 64,000 baht, I think. Thanks to govt incentive. Max distance is BS, and I wouldn't try to go 100 kms with ours, if that.