Look, I'm as much a fan of multi-everything as anyone here. But, there's nothing polished about the quoted multi-tasking display. Powerful? Maybe... if power is disorganized windows. Versatile? Yes. But being versatile doesn't equal power.

One of the things that Apple has done well, is that they aren't adding so much to the primary UX that its disrupting their own ethos. Amongst companng them and everyone else, their not-quite-multasking UX has meant they concentrate on opimizing touch response time, speed of screen refreshes, and other small details that really just mean "its not so powerful but dang is it smooth." They aren't running the specs game exactly. And at the same time they are. They are basically saying that they can make a cleaner experience with their cards than you can with yours. And to that, they are #winning.

MS is learning that aspect of things, and to some degree working towards the same aims. But, in doing so, they are losing some of their inherent advantages. They do multi-tasking well on these new tablets, but that's not translating to anything more than "its just as powerful as a laptop." They can't/won't do that on their phones, even though that's where the UI would shine (gesture up/down to search/open new app and switch between - seriously easy transition given WP's UI direction).

Jolla's UX misses on this, as does FirefoxOS, and a few other shells out there. Its not about the shiny, nor the features. Its paying attention to the details that will only matter in the end as something consumers will just "feel" as better. Even when they don't have the words to say "yea, that looks cool, but it feels so complicated." - person looking at the quoted screenshot but responding based on gut, not on tech knowledge.