Certainly I agree, but for the more heroic and cinematic (gun-fu) types of games I see no problem with it, but realistically I would think so…
Still, even if you limit the two attacks to be against the same target, they are treated as separate attacks… and the skill requires the two weapons to be different skills. For more realistic oriented games I might have used that option, or that the targets must be within a certain arc, i.e. no attacking people too far away from each other, but two adjacent opponents could be attack… perhaps with a penalty… I don't know.
A paired gun combo would entail identical guns, which would be based on one skill, like paired weapon fighting in ML, also its one attack as opposed to two of the two gun combo… That is why I'm just wondering how the critical should be modified, if one should differentiate it from the modifications in ML…