Get me video that proves full-skip semi-chisel will fell and buck 1 full cord (hardwood or softwood, I don't care) faster than full-comp semi-chisel. It should be on a 70cc saw like your 440 or my 460 wearing a 20" or 25" bar like most of us here would use on a saw that size. And yes, the sprocket size needs to be the same as well. They make both chain types for a reason. Skip chain is for long bars buried in big wood. Helps out in softer wood where the chips are bigger and harder to clear from the kerf as well. Probably has something to do with why you PNW cutters like it so much.