Well it's because the 1P card is so much more impressive looking than the 1K card.... I mean they get a flashy gold card and think "wow, I'm so hot."

Alas when I get mine this year I shall just be a bit sad, because I know what I've had before, but I surely won't be a pompus 1P. I'll be contrite and polite and pouting at the 1K's as I pass by them on my way to the back .....