Except literally nobody said that...
You're the one never doing PUG by your own admission that is out of touch if anything. The reality of things is that, sure 2k5 can be the upper echelon of the average wow player. But it doesn't matter for what we are talking here. It's still very low when you want to easily PUG +20, that's the important part : the context. What you seams not being able to grasp here.
Sure you can keep telling 2k5 is a very good score as long and as often as you want. But it doesn't matter to the reality of what those player are experiencing. And the fact here is that nobody will take a 2k5 player they don't know in a 20+.
You can be your city's tennis champion, and sure technically be in the best 10% of humans who every played tennis. Congratulation, but that won't make you be invited to an ATP tournament for free. That's not how real life works.