Those were just examples. And I'm not at all concerned about the download time, having wi-fi and all. My concern is the space that takes on my phone (and why).
But if we're talking about speed specifically, do you think a 10Mb app would be or load faster than a 1Mb one? This makes me wonder by the way... Does a non-optimized image (part of an app UI, not a photo) take longer to display in a mobile?