But in the real world, I don't think anyone cares if you can open an app 100ms faster.
Most, if not all, Android mid-range devices will do a very good job at mail/messaging/camera/navigation/banking/etc. Apple has a small advantage at loading time for games.
I'd lose far more time on the iPhone because of the inadequacies of the UI, where the back button is both inconsistent (swipe or top-left) and badly placed (top-left), every app is forced to put settings into the Settings app so you need to quit to change anything etc. Try connecting to Bluetooth or WiFi from an Android and you'll see how quicker it is, since you can long-press the drop-down icons.
Not to mention putting music on my phone, which is a breeze when I can simply copy it across and I don't need any 3rd party application, particularly one with such a horrible, unintuitive user experience (in my opinion) as iTunes.
Being unable to customise my screens with direct dials, calendar widgets, location sharing etc. - not even simply grouping icons, visually, which on iOS you cannot do because it allows no gap in icon placement - makes general use more involved, clunkier and slower.
The examples are endless. The iPhone is like a car that goes slightly faster but only in a straight line. It's still a 2007 device, even with the bells and whistles, while Android moved on.