> Correct me if I am wrong, but I thought I read somewhere that the new Tegra 4 chip is > far better than the Tegra 3 chipset, but I also read that at the moment it doesn't > have LTE, unlike the new Samsung next generation chips which have it on chip already.
Not having it on chip != can't have it at all. Quite a few devices use a separate radio chip, including everything Apple makes. And I've seen 50+ Mbps speedtest.net runs on Verizon LTE with my iPad so I don't think it's hurting them ;-)