There are some real differences between the P99 and the P22. I'd say they are similar, but not identical by any means.
While the P99 is Top Shelf, the P22 is admittedly built "cheaper". My biggest complaint is the use of Zinc for the slide. I'd like to have seen that part made with a more durable material.
I have now put around 1000 rounds through my P22, with some FTF's. It appears to be "bullet specific" and tends to prefer the copper jacketed bullets over the lead versions.
The P22 not being a self defense firearm, the FTF's don't bother me too much. .22's as a whole tend to fail more often than any of my center fire pistols...
The main thing is, it's reasonably accurate, reasonably durable, reasonably reliable, and reasonably priced.
I like mine and shall keep it!
BTW, Welcome to HGF!