It's pretty self-explanatory but since there seems to be a lack of basic understanding let me elaborate.
TTK does matter, in fact it matters so much, one could even say it's the single most important factor and this is why:
If you're not a complete bot you can just walk away into cover - that's all you have to do since there is SO MUCH TIME.
Oh btw. RFP can't even kill in one mag at 60m+so it would take 5.1seconds, under the assumption that you hit 31 bullets out of 33 from 11 bursts, to kill at that distance.
U know "easiness"...