Javascript performance seems weaker on the XB1. Something like this runs at two frames per second on my XB1 vs 20-30 fps on PC/Windows phone.
It's great for media playback though (Emby etc).
Cheers
That site on XB1 is really slow compared to my phone. Weird since I haven't noticed that big of difference on other pages, but then again I might not have been using Javascript heavy sites either. I did do a test of Javascript performance on my XB1 versus my Lumia 640, both running Edge 13 & Windows 10 and got this...
Dromaeo Recommended Tests:
XB1:
196.79runs/s (Total)
http://dromaeo.com/?id=245721
Lumia 640:
68.63runs/s (Total)
http://dromaeo.com/?id=245724
Compare: http://dromaeo.com/?id=245721,245724
This test was interesting. If I'm reading that right the XB1 was consistently faster than my phone. If somebody has a better test let me know.
Here's a test of HTML5 capability...
HTML5Test
XB1:
426 out of 555 points
http://html5test.com/s/5ff10e2cea8d96c9.html
Lumia 640:
442 out of 555 points
http://html5test.com/s/48382b2cea904252.html
You would expect them to be identical since they're basically the same app. The biggest difference is that the XB1 doesn't have GPS & geolocation capability. Duh.
BTW, IE 10 on the XB1 got a 286 & IE 9 on the 360 gets a 98. LOL
Anyway, yes, I think there will be some cases where some sites are faster when using a mobile or deskop/laptop, but then again you'd probably wanted the touch or mouse experience there anyway. For most sites I think the XB1 will do just fine.
P.S.
My Toshiba Satellite U405 laptop running Chrome-based Linux for comparison:
http://dromaeo.com/?id=245720
http://html5test.com/s/b7ebd42ceaa78d7a.html
Tommy McClain