I also had the same question, but then realized this was an iPad screenshot - the company (Verizon) is in the very upper-left-hand corner.
Yup it is Verizon LTE. I actually tried both in my area and the speeds are about the same. The reason I went with Verizon was because I already have an ATT iPhone 4S. Once they come out with an ATT LTE iPhone, I'll have the best of both worlds and won't have to worry about coverage any more.