probably because he was doing 10 in EQ. Similar reasons I imagine; stacking DPS classes outside of group so they can help out.

Honestly, though, Frosty is right. If your starting a new game from ground up, just level a full group. Can always add char's later. I don't think EQ2 has the same AA grind as EQ1, so having stacked DPS to make grinding faster doesn't make quite as much sense.