I found the base antenna site (http://www.apple.com/antenna/) pretty enlightening.
In our tests, iPhone 4 dropped from 3 bars to 1 bar
In our tests, the BlackBerry Bold 9700 dropped from 5 bars to 1 bar
In our tests, the HTC Droid Eris dropped from 4 bars to 0 bars
In our tests, the Samsung Omnia II dropped from 4 bars to 1 bar
In our tests, iPhone 3GS dropped from 3 bars to 1 bar
I noticed some time ago that they absolutely refuse to refer to their mobile devices using articles, and avoid personal possessives whenever possible. It's always "with iPhone, you can blah blah blah", never "with the iPhone", and rarely "with your iPhone". They exclusively refer to their product as if it were an abstract idea, never grounded in physical reality.It was always something quietly infuriating before, but here they've intentionally tried to contrast themselves against their competitors.
Also: "bars" is not a scientific unit.
Well, sure it is, if you're measuring the pressure of hot air.
However, I have to wonder at this PR, changing the discussion from whether it is unusual to dropbars from how the phone is held, from whether it is unusually easy to miss-hold the iPhone 4.