Yep, bars aren't valid.
But the point of the post is that CDMA is far superior to GSM, not focused on differences between GSM providers. Verizon skipped GSM and is adopting LTE specifically because of these issues. I tried a half-dozen GSM phones on multiple networks before settling on Verizon and CDMA - the coverage simply doesn't compare.
As far as the iPhone, if you couple a poor network, a lousy provider and a marginal phone, the call failure rate is much higher than if any one of the three was of decent quality. Apple had to make too many design tradeoffs in the iPhone to get decent performance, and focused on aesthetics at the expense of performance.
That would be a BIG " iOuch" to all the fanboys out there.
Apple better step up to the plate and make a statement because T-Mobile put out a press release saying it's Apple's problem in their area in Europe.
Steve better be ready for an iButt Rippen that he's used to giving and give a statement soon.
I predict total recall for poor choice of unproven chipset and poor design of placement of the 3G antenna.