nishokie,
ur Q in general, 'Is CP faster than 485'? is a mighty loaded question. And I am sure you will find several discussions on this forum...especially since AC21 became law and the current processing trends/timeline for 485/CP in general. Also, it depends on ur situation whether u got married after getting 485 approved and are doing FTJ and then CP maybe ur choice.
anyways, i am rambling here and maybe u see my point that its a 'loaded Q'
I will comment on ur observation that there werent too many 'E' based interviews in February. from what i know how the 'E-based' CP interview dates work is that if ur case had been forwarded to the consulate by beginning (1-15th) of decmeber, then u shud expect an interview in february. based on this, i do not know how many cases were sent to mumbai consualte for 'e-based' applicants from november-december 2004. so basically its hard for us to know the basis of the number of E-based interviews in february...maybe there were less applicants in nov/dec 2004?
good luck to you.