No one knows subscriber numbers and WoW doesn't separate sub numbers so WTF are you talking about. Player retention doesn't mean much when your game was at its LOWEST point after last expansion basically if they stayed through that disaster they probably aren't leaving, retail has a huge amount of raid loggers vs classic doesn't and classic seems to have a tighter community because of the nature of the game over retail. Both will have rises and falls but the biggest difference is retail can go play classic on top of retail, classic cannot play retail unless they buy the expansion. WoW forums pretty much is agreeance that classic is the more popular titles atm mainly due to its hardcore server being about 2 months old, now will it last probably not. Just like everything it iwll have huge influx slowly die off the level at a certain point.