I noticed the suggested stats for weapons in the new errata. I had the impression that they made the game more difficult for space marines. Their Bolters seem rather weak (about as strong as a Tyranid fleshborer), while Tau weapons seem extremely powerful. I know that this is a work in progress so the designers will have a chance to revise it. I imagine that they took one dice and averaged it to 5, and added it to a 1d10 dice. However, it seems that they did that for the marine weapons while possibly double counting the alien weapons.
Please advise if I am wrong, this was just the impression I got. Having a Tau Fire Warrior rolling 1d10 + 12 with Pen 4 seems to make them deadly in large numbers against Marines. Marines with 1d10 + 9 PEN 4 seem to have pop guns in comparison.
...I guess that they might need an errata for this errata...