One of the things that most bothered me in the initial responses from Apple (the Jobs emails and the open letter) is that none of them acknowledge that there is a fundamental difference between antennas from other smartphones losing signal and the iPhone 4, where the antenna is exposed and can be shorted, even with one finger. I'm kind of disappointed they apparently still don't acknowledge that (maybe the live transcript is incomplete).
Citing dropped call numbers or return rates or showing other smartphones with signal reduction caused by something completely different just seems like willful misinformation. I suppose their usual MO is to not acknowledge complaints head-on, but that's usually with new features people would like to see. If I can short an antenna and change its RF characteristics so as to lead to an instant dropped call, that seems like a fundamental engineering flaw, and I would've liked them to acknowledge that.