PLEASE stop quoting this video.. look at the 2-3 bars signal on the AT&T phone in this test. Please.. you're gonna compare that to a Verizon and Sprint iPhone 4S getting 4-5 bars? Sure, all areas are going to differ depending which network you are on, but to post that video with 2 bars on one of the phones and claim the network is slower overall is pathetic. Even with the lower signal, the AT&T iPhone 4S loads youtube videos and some tests faster. Ha.
Verizion & Sprint = Slow
I'm pretty sure you can. Right now, I'm sitting with my VZW phone (4S) with 5 bars next to an AT&T phone (3GS) with two bars. I have never been with anyone holding an AT&T phone that has more bars than I do at any given moment. I'm not saying this is indicative of the entire country, but still... I've seen this in many cities/states.
When I got this phone, I wanted to do a comparison with my friend's 4 on AT&T. His test came back with 3.86 down, but my phone still loads pages faster. We also tested out Fandango, and I was looking at movie times while he was still staring at a blank screen. It's not scientific by any means, but I'l take my real world performance over the hit-or-miss AT&T service.
Also, it seems odd how everyone's latency on here is so high. Mine is almost always below 100ms. Granted, my d/l speeds are never higher than 2 Mbps.