what is the difference betwen the powerizers and them
First off. PoweriSers and PoweriZers are different. PoweriZer are identicle to your projumps, made in the same factory in china by the same company. PoweriSers are made in Korea.
Now, the difference between PowerSkips and PoweriSers?
PowerSkips cost about £500 more to start with... Why? Because they use better quality parts. The springs on them are much softer, they have better moving parts, and are lighter.
They are designed for high-power professional use. PowerSkips are what SweBounce use.
lol i heard that the powerisers were the fake model
No. Not at all.
PowerSkips are the original invention. PoweriSer are the original affordable copy of skips, and are very good quality. I have a pair, over a year old now and still going very well. Whoever told you PoweriSers are "fake" is a total idiot.
The "Fake" model is most certainly SkyRunner, which are downright dangerous to use and do actual fall apart. They are not allowed to be sold by Alexander Boeck (original inventor of powerskips and owner of the patent on the stilts) in any country, yet some people still try to sell them because they can make a quick buck.