The damage of 2-8 with a direct shot can be equated to 8 (i.e., 6-10), as a direct shot gives about +60% damage. This is only for regular shooting.
But on top of that, there's also increased initiative (9 against 8) and some kind of ability. And we also need to consider that melee damage with 6-10 is much more powerful than with 2-8.
In short, 4-9 is much closer to the truth.