To reiterate: Do not rely on comms as an accurate measure of anything at all ever, especially skill. People give em for really random reasons: if they q'd as a group of 3 then ur their only option, some people just give out their first 5 randomly for the challenge, etc. Comms are not worthless, but don't try to draw any specific conclusion from their patterns. Just take em as you get em.
To reiterate again: Ask the people you run with, or ask a NIN you know personally to check you out. Just saying "I pull sometimes when I do all sorts of different things, but no one says anything and I get comms" has no helpful information. You could be anywhere on the spectrum from worst to best NIN in the game if that's all the info we have to go on.