On those devices, it is exactly the same. RIM / Verizon / CDMA Carriers have been toying with the 3G symbol on Tour OS builds that were leaked. Official releases from VZW have always indicated 1XEV on my Tour. I have two Storm 2 users at work and I believe the indicator is different depending on which theme they use.
IMHO, it is simply a way to market and tout 3G. Probably smart in their fight for subscribers to show it as 3G!!
Z10 and PlayBook <- 9650<- 9630 <- 8330 <- 8130 <- 8830 <- 8703e <- 7130e <- 7250