Nexus One and iPhone connectivity problems - are smartphones revealing the real 3G network quality of mobile operator providers ?

After the HotHardWire's article AT&T Insiders Report iPhone Exclusivity Going Away On Wednesday that's telling us that some part of the iPhoneconnectivity problems may rely on the AT&T 3G network quality — the other part coming from the iPhone itself —, it seems that the Nexus One's connectivity problems also comes from the T-mobile's 3G networks quality — the other part coming from the Nexus One itself —, according to the post 3G Issues on the Nexus One (sadly, the Google's source isn't cited in the post) "It looks like Google has come up with a two-part explanation for the crappy service on the Nexus One. The first half is a weak 3G network with T-Mobile, the second half is software related. There should be an OTA coming out soon to fix the issue.".

Are smartphones revealing the real 3G network quality of mobile operator providers ?