pdp apparently stands for performance designed products. I'm not sure what a product not designed for performance would look like.Wouldn't that be a counterproductive, non-performance, undesign?
Don't ask me. I'm assuming that something that is performance designed means (a) it will actually work, which immediately makes it better than many products on the market today; (b) it will be produced to a decently high standard - I'm assuming that, of course, otherwise it would just be classified as a designed product, thus putting it in the same category as pretty much every other product on the planet.
The problem with acronyms, to change the subject somewhat, is that they don't mean the same thing to every person. Looking at Wikipedia on the subject of PDPs, for instance, you find that there are umpteen (well, maybe not umpteen; more like thirty) other interpretations of these three simple letters. I haven't got room to go into all these, though it might make an interesting post sometime, and anyway it's late at night and I need to go to bed.