The Sektor ought to be effectively, a lighter Pike – has the Revelation chassis with lower leg power bulge things around the bushes and 10mm more travel, TFT say it’s a fantastic fork. I’ve got one on the way.
I’m guessing, given that it’s a pound lighter, you lose a little stiffness relative to the Pike – the weight must have come out of the chassis mostly – but having just swapped a dead Pike Air U-Turn for a 2011 Revelation, I have to say that I can’t tell that much difference even on rocky stuff.
You can still find new coil Pikes out there btw, but the Sektor is lighter, about the same weight as a Pike Air U-Turn if the manufacturer’s figures are right.