1000w hub motor beats 1500w motor in speed?

dont understand how is 1000w
https://www.leafbike.com/products/diy-b ... -1067.html faster than 1500w?? https://www.leafbike.com/products/diy-b ... -1181.html , as i need it for deliveries, i tought about investing in 1500w, but 1000w is faster? How is that possible? Would i also get 30% more range on a 1000w and less weight?

Leaf motor is in question, rear rack

You posted the links wrong, none of us can see the motors in question.
Regardless, a 1000w motor can be faster than a 1500w motor if it has either a faster winding (higher Kv) or a higher battery voltage. If a 1000w motor is slower than a 1500w motor at the same battery voltage, it means that the windings are different, and the 1500w motor will just have more torque.

The airspace around the motors stator-teeth have a certain amount of volume available to wrap copper wire.

You can use many wraps of thin wire, or a few wraps of thicker wire, or somewhere in between. This is called the motors Kv, or its turn-count. (3-turn, 4-turn, 5-turn, etc...)

If the voltage supplied to two motors is the same, the turn-count determines the top RPM'S. Road-speed is also affected by wheel diameter.

You get good range by adding pedaling as much as you can, and by accelerating gently as often as possible. If your battery is big enough, you never "need" to pedal, and you can accelerate as hard as you like, as often as you wish...

1000W ebike hubmotors usually have 28mm wide stators, and 1500W motors typically have a 35mm wide stator.

If you feed both of them the same watts, they will have roughly the same range from the same battery pack.

If both are frequently fed 1500W, the 1500W hubmotor will be warm, and the 1000W motor will be hot.

When copper wire gets hot, its resistance increases, so there is a tipping point where continuing to feed a 1000W hubmotor 1500W will send it into a heat-soaking death spiral.

It can be affected by how steep the hill is, and how long it is. Also, how much load? Is it one small rider on an aluminum road bike who adds pedaling? Or two large riders on a steel cargobike with no pedaling?

If they are both direct drive, then you have the option of adding ferro fluid to improve the motors heat-shedding ability.

https://www.leafbike.com/products/diy-bike-conversion-kit/29-inch-48v-52v-1500w-rear-electric-hub-motor-kit-1181.html
>>. Max speed: 60.5 kmh -- 37.5mph Default (Free customization other speeds: 42mph or 30mph, 25mph, 20mph, 15mph...please leave message)

https://www.leafbike.com/products/diy-bike-conversion-kit/28-inch-48v-52v-1000w-rear-wheel-electric-hub-motor-kit-1067.html
>>. Max speed: 71 kmh -- 45mph Default (Free customization other speeds: 35mph or 30mph, 25mph, 20mph, 15mph...please leave message)

I assume I have the right wheels and the statements you're questioning. Unfortunately there's always a problem with whether the information they're giving you is even accurate. In the link they're calling one a 29 inch wheel, etc. Maye someone else can see something in their info I'm not getting.