Well, I tried to replicate the antenna issue with various coworker's phones, and not a single one dropped bars or data rate. Yet, my iPhone 4 dropped data to a complete standstill. Apple must be standing at the edge of an elevator when testing these other phones. What a complete fable.
You should know very well that unless you give us data about which phones, which networks, where the closest towers were for each carrier are, how much signal strength there was for each, you ain't said nothing.