Pitch and power always go together to get to vRef. I can fly 18" at a lot of differing speeds depending upon pitch; I can fly 120MPH at a lot of differing pitches/power settings. Generally I find when people are having problems with glideslope, landing, etc. it is a pitch issue. They are flying a power setting per the book or other reputable source to try and hit a speed but with too much or not enough pitch (AOA).
Pitch (AOA), power, and speed are all directly related so all 3 have to come together to be consistent.
I will say 18" gets me to about 120 then gear at 1 dot and then 1/2 flaps at FAF coupled with 2-3" reduction puts me @500 FPM down the G/S at @ 95mph with about 5 degrees of pitch. This has worked for me in F, J, E, C's with pretty minor modifications depending on weather, weight, CG, etc. but emphasis on minor.