Healing Power vs Fire Power on gloves, maths inc.
First off the relevant coefficients. For a DPS shammy these are:
Flame Shock: 21.42% + 10% per tick
Searing Totem: 16.67% per tick
Flametongue Weapon: 10%*wep speed (i think, wowwiki inconclusive)
Earthshock: 38.58%
Lightning Shield: 33%
We'll assume that we're not using lightning bolt or fire nova totem since they dont find their way into most rotations.
I'm also going to assume that you're using Glyph of Stoneclaw Totem.
First off Flame shock:
with 20 Fire power dmg done is 0.2142*20 + 4*0.1*20 per 14 secs = 12.3/14 = 0.88 dps
with 16 sp: 0.2142*16 + 4*0.1*16 per 14 secs = 0.7 dps
Searing totem:
20 Fire: 0.1667*20 per 3 secs = 1.13 dps
16 SP: 0.1667*16/3 = 0.89 dps
Flametongue:
20 Fire: 0.1*20*weapon speed (assume wep speed of 1.0) = 2 dps
16 SP: 0.*16*1 = 1.6 dps
Earthshock:
20 Fire: 0 dps
16 SP: 0.3858*16 per 14 secs = 0.44 dps
Lightning Shield:
20 Fire: 0 dps
16 SP: 0.33*16 (assuming 1 every 4 secs) /4 = 1.32 dps
Totals:
DPS from 20 Fire = 4.01
DPS from 16 SP = 4.95
From this it seems that Healing Power on Gloves seems the superior enchant due to a large chunk of dmg coming from lightning shield.
However i can't help but feel that ive missed something. Feedback would be cool.