I don't think it's fair to compare the same browser (by name, at least) on two distinct operating systems. I believe that the sentence in question is biased by the use of any other browser on iOS, comparing thus iOS Safari with other browsers running on the same OS.

I didn't try to start an argument on Apple sabotaging it's competitors...

Android browsers do not, by definition, run on iOS.

What I would give for a mobile device offering duel boot between Android and iOS.

I've invested heavily in both in terms of apps and usage over the years, not to mention dev and testing and can't bring myself to stick to one exclusively.

The point was very clearly "I would rather develop for Safari on iOS that for any browser on Android."