Um, from what I saw it was caused by the same thing. You hold a phone a certain way you lose signal strength.
> that seems like a fundamental engineering flaw, and I would've liked them to acknowledge that.
I watched the whole thing and several times it was acknowledged as such. Maybe you wanted them to say it was only an iPhone4 issue and not a general smartphone problem?
But as far as the 'completely different' thing goes, as far as I know the lower signal can be caused by signal being absorbed by your hand. But what seems to happen with the iPhone 4 is that there is also this shorting issue because of an exposed antenna. But when directly asked about the shorting issue they say it's about your body being a "pretty effective signal absorber".
Apple is playing some extraordinary deception with that. They're comparing a death grip on phones (which is entirely unnatural and I certainly don't hold a phone like that), and saying "See, it's all the same".
That isn't the issue. The issue is ruining the profile of the exposed 3G antenna by electrically distorting it (whether with your body or against the GPS antenna).
It was pretty clear when he talked about the 3GS and cases -- a death grip with or without a case will yield exactly the same outcome. But they're trying to conflate the downsides of an external, unavoidable antenna with holding the phone in a ridiculous fashion.