Food for thought:
Tonight I did a quick voltage drop between the 2200 mah and the 1600 mah. Here's what I got when using my newest LP TRA grand and maintained contacts / batteries:
LP RM2 with 1.06 ohm coil:
1600mah 4.18v resting for weeks. 3.92v under load = 0.26 VD.
2200mah 4.19v resting for 2 days. 3.91v under load = 0.28 VD.
Odin with dual coils netting 0.54 ohms.
1600mah 4.18v resting for weeks. 3.70v under load = 0.48 VD.
2200mah 4.19v resting for 2 days. 3.65v under load = 0.54 VD.
In conclusion, the 1600mah AW IMR 18650 must have slightly less internal resistance - a 0.06v advantage to the 1600. Prolly barely perceptible but for those inquiring minds, now we know