"If Instagram were an Android exclusive rather than an iOS exclusive, would it have picked up 100,000 users in its first week and a million in its first month?

"If Instagram were an Android exclusive rather than an iOS exclusive, would it have picked up 100,000 users in its first week and a million in its first month? No way, I say." The Android version of Angry Birds got a million downloads on it's first day. Its existing hype and fandom obviously had a lot to do with that, but still don't see why the _No way_