The LTE coverage in so cal is definitely much better on VZW compared to AT&T especially in Los Angeles. Speeds are indeed much better on VZW too. Signal strength of LTE is also stronger in VZW. I have both AT&T and VZW iPhone 5 due to coverage issues in my general area.
The fastest I ever gotten on VZW was in Alhambra, CA at the In-N-Out Burger and I got 65.00 Mbps down and 20.41 Mbps up with a 48 ms ping.
The fastest I ever gotten on AT&T in Pasadena, CA was 24.93 Mbps down and 8.84 Mbps up with 84 ms ping
Posted this in the other LTE thread, this seems more active, so I will post here as well.
Perth.
No wonder why you got those amazing speeds. I'm in Sydney and the highest speed I've gotten is around the 62Mbps mark. I wish I could get your speeds.
Speedd Test
This is my at&t lte speed from Riverside, CA. This sucks!