Russ, I think I figured it out, why micro coils hit harder than their resistance.
Up until now I was making my micro coils sparse, at about 1.5 ohms, and was wondering what you were talking about.
Tonight I got bored, and made a dense micro coil like yours, where the loops touch. Made it with 2.5 resistance just to try out your insanity. Lo and behold, it has about same TH, vapor and flavor as my old 1.5 coils. That had me scratching my head until I decided to meter it under load.
1.6 ohm. So, 2.5 ohm without power turns into 1.6 ohm when you fire it. I'm not sure why, possibly because Kanthal expands a bit and makes contact with other loops, thus shorting, kind of.
My next experiment will be getting a second RM2, and setting them up side by side -- one with sparse coil at 1.5, the other with dense at 2.5, identical wick, position and shape, and comparing the two vapes.