Frankly, that is your own opinion. I currently use an IPS display, and I think LED displays look much better. Apple's IPS display looks good though. If you're someone who needs to see your computer while you're 3 feet to the left of the screen, then that's your own personal need, and won't be necessary from 98% of consumers.
Before you reply to the following, I suggest you try and read some information on different display technologies. I suggest you try Wikipedia, it has a fairly comprehensive article on the subject. It would be beneficial if you had an idea of what you were talking about. Also, pulling statistics out of thin air does not make a very good argument.
You are mixing things up.
IPS and TN are panel types, both of which are equipped with either
(W)LED or CFL backlights. So the LED display you mentioned most likely has either a TN or an IPS panel, unless it happens to be an OLED display on a mobile phone (there aren't many larger OLED panels commonly available at the moment).
rMBP is the first Apple laptop ever to be equipped with an IPS display. Ever. And this is a huge deal to many people. A couple of generations of laptop displays have already been LED backlit, but this hasn't had a visible effect on image quality, or at least it hasn't improved quality per se. It has greatly reduced power consumption, which on laptops is often considered more important than color reproduction. But it's still the panel technology, not the backlight, that makes more difference to color reproduction. Only a handful of laptops have been available with good hi-res IPS displays, be they LED backlit or not.
The wider viewing angles of IPS panels make a lot of difference if you actually do anything that requires you to see colors consistently. That would be any graphical work, photo or video editing, some CAD work etc, most of the uses the rMBP is marketed for. Even gamers can benefit from wider viewing angles. Saying it's just a matter of opinion is really quite ignorant.
There have been some quite bad IPS panels out there too, at least some fairly recent 15" HP Envy and Sony Vaio models suffered from reduced color gamut due to a very strong yellow color cast. So an IPS display isn't always automatically a good display.
Vaio Pro 13
XPS 15 (has LED though)
Alienware 14
Alienware 17
Kirabook
Of those you listed only the Kirabook has a directly comparable display, most seem to be lower resolution and/or TN panels, with LED backlighting in ALL of them, not just the XPS 15. (EDIT: Seems I wasn't quite correct, the Vaio actually has an IPS panel, and according to some reviews Alienware does offer a $150 IPS upgrade option for its laptops, though I was unable to configure a laptop with said option in the Alienware on-line store. Might be a geographical limitation.)
I think it's problematic, that in this comparison you are mixing together 13", 14", 15" and 17" laptops with different form factors, and different target demographics. The Kirabook would be the only one that happens to be very close to a 13" rMBP with it's IPS panel and slim form factor, and guess what?
It's more expensive!
The Vaio seems to be somewhere between a MBA and a 13" rMBP, both price- and featurewise. So depending on which specific configuration we are talking about, it might actually a very good option for someone considering a 13" MBA or a 13" rMBP.
So you offered a couple of valid options there, that's very good. None of them backed the claim that rMBPs would be overpriced though. You just showed, that there are many different options available, targeted to many different demographics, and that if you want to compare the prices, you have to compare them to similar laptops with similar target groups and usages.
If you personally can't find any use for an IPS panel, then the rMBP, along with the top-of-the-line EliteBooks and ThinkPads (or whatever Dell and Fujitsu are currently offering to compete with those in their Precision and Celsius models, or even the Kirabook you mentioned) don't really make much sense. But for those who want and/or need a good quality screen, the options are limited and expensive. And among those options the rMBP is very competitively priced, and offers for instance longer battery life and smaller form factor than the competitors. These are niche products, and the target demographic seems to be more than willing to pay for what they get.
So don't count on Apple dropping the price any time soon, it has absolutely no reason to do so.
