N+1 posts on this forum show the attitude of supremacy on J's part. The one's I've most lolled at are them telling, "she's able to pay her rent, she must be J" and such. haHAHAHhhahah
Then there's the much documented view P's have of J's, one telling they're rigid-minded and unable to see outside their chosen perspective, goal or whatever niche of thinking they've attracted to
It's normally unreasonable to blame J for being narrow-minded. But then there's the case of self-evaluation of performance by arbitrary, self-chosen standards.
I've guessed idea in the J supremacy is in ignoring the evidence to the contrary. Narrow down your view, choose your own games and see how you're such a winner. Want to be the best in hola hooping? Heck, just J-ishly choose to do so. So you've got your goal, and after a few months of training, you're such a great talent. Bravo. No matter the other talents you've neglected to develop - see, you're not thinking about them. Such issues don't fit in your well-defined goals.
See the problem?
For Fahrenheit's sake, come on - don't make me spell it out.