In general the higher the resistance the lower the power needed, kinda, sorta.....
The mass of the coil, the heat flux of the coil, and the design of the vapor chamber of the atty also play a big part in this. Two exotic coils @ .5Ω will require a lot more power than a simple wire single coil @ the same resistance. As far a flavor, the design of the atty is the most important factor. I have atties that will produce wonder flavor at 20W and 1Ω and others that require more exotic coils to reach their flavor potential. I have a Siren II atty that I build @1Ω and use with single 18650 mods and get great battery life. It is a single coil atty and I use simple wire and get great flavor. The draw is restricted although direct to lung and the vapor production is limited although satisfying to me.