Remember a while back where we were rejoicing and taking smugness to a whole new level with IE9's hardware acceleration putting it in another dimension compared to other platforms in a HTML5 speed test? Well, it seems Apple have grown tired in copying Windows Phone 7 in terms of features to play catch up while ahead and have instead focused on toughening up their mobile web browser - Safari.

In the tests ran at MIX earlier this year, Windows Phone 7 achieved an FPS (frames per second) count of 25, compared to Android's 11 and 2 with iOS4. We are now seeing with iOS5 a significant improvement of around 28 FPS, which is great for Microsoft and developers for Windows when you think about the long-term potential impact. Apple hates Flash, Microsoft is adopting HTML5 and continued development into this technology from both sides to increase functionality and speed of both computers and mobile devices can only mean a healthier system and experience for developers end-users.

Although iOS may have the upper hand thus far, we must remember that WP7's benchmark was ran at MIX, let's see how IE9 runs at release later this year (it seemed pretty snappy in our Mango preview video).

There's two videos after the break, one of iOS 5 Safari in action (speed test) and the other of IE9 in the Mango preview (general use).

 Via: WinRumors

UPDATE: More data is coming in on this issue and it appears our first conclusion might have been premature. After running roughly 30 tests to determine the frames per second of IE9 (running on Mango), thenextweb has determined that IE9 runs no slower than 25fps and as high as 45fps. We'll keep an eye on things to see how all this shakes out.  If these numbers hold true, IE9 will easily be able to hold its own against iOS.

Thanks goes out to Babse and Brianna for tipping us on the updated info!