It must be a time of day or luck of the queuing thing because I'm also on Red Eclipse and it seems like generally the Imps are in the lead in recent weeks (solo level 50 that is) !
Evenings especially, for example tonight, Imps are just hitting win after win in the WZ instances I have ended up queuing into. (1 Rep win, 5 Imp wins)
This has nothing to do with patch 1.4, of course. Probably reflects when premades tend to queue and other factors as well. I must obviously not be queuing at the right time of day then