Here are some interesting bit I picked up. I am sure certain open-source extremists would agree with Mozilla's Alex Limi completely.
Alex Limi calls (Mobile) Safari on iPad “a miserable experience,” because some special apps do a better job than the web browser. Com'on Safari on iPad is designed to be a general browser! However, he did say that he didn't have a good reason choosing Firefox over Chrome. And he pointed out that using modern Safari, Chrome, Opera and Firefox all yield to similar experience which he refers to that as a bad thing. It is beyond my understanding way having similar experience would be a bad thing.
You can watch the presentation at Air Mozilla.
UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:13.0) Gecko/20100101 Firefox/13.0.1 AlexaToolbar/alxf-2.15