A 4G comparison of the Droid Charge, Samsung Epic, and T-Mobile G2 done in Walnut, CA.
The Droid Charge on Verizon 4G LTE was able to pull down over 10 Mbps consistently. The T-Moble G2 over T-Mobile 4G (HSPA+) averaged around 2-3 Mbps. The Samsung Epic 4G on Sprint 4g (Wimax) an average of 3-4 Mbps. Of course, speeds vary by location, but this test provides a snapshot of the different 4G capabilities given a set location.