Gilmor Oscillating sprinkler vs Garden Aquazoom Oscillating Sprinkler -the first one shows very poor performance -why?

[Mini Me]

Hi guys

I have this old Gardena Aquazoom

GARDENA 1975 Aquazoom 3900-Square Foot Oscillating Sprinkler with Fully Adjustable Width Control : Amazon.ca: Patio, Lawn & Garden

Find products from Gardena at low prices. Shop online for barbecues, mowers, garden tools, generators, snow blowers and more at Amazon.ca

www.amazon.ca

Today I bought two of these (returning them tomorrow)

Oscillating Sprinkler with Base -Aqua/Grey

Easily control the watering action of this Gilmour oscillating sprinkler that gives you customized coverage and superior control. It features adjusta...

www.rona.ca

Using the same supply the Gardena one is much better (covers a larger area ) What makes the difference ?

One more question
What is the difference between these two products (both Gilmore and as far as I can see identical specs)

https://www.rona.ca/en/product/oscillating-sprinkler-with-base-aqua-grey-20245026 this is on sale $42
https://www.rona.ca/en/product/oscillating-sprinkler-with-base-aqua-black-20245025 this one is $26

 

[WorthFlorida]

Looks like color is the only difference. Coverage distant on any sprinkler is usually determined by inlet size, spray arm diameter and nozzle size. Of course a new one can have debris from the manufacturing process that causing blockage. at the inlet, some have a washer with a debris screen that could be causing a restriction. One that covers more ground does not make it a better sprinkler, just a slightly different design.