Yes, and also a lot of the time, there isn't great communication between all of the players in a 3v3 - text only most of the time, and some players don't like to talk to their teammates! So you don't want to go in for the ultimate alpha strike only to have your two wingmen stay back and not know what's going on, letting you go in alone and take all the heat.
These long range firefights can be good when the sides are differently abled.
Ex: they have 3 crunch ships, like plasma or Hydrans, and our side has maybe one plasma and mostly longer-range direct, so we can't afford to go in close until something else happens, like one of them strays out alone. It's funny when the other team might have all plasma and maulers and they complain that we are running too much, expecting us to just walk up and take their firepower!