Made you a video.
Same situation, same mobs, same gear, 48 PUG instead of 50 Archer.
Second Video:
http://www.youtube.com/watch?v=swRsHpF3BIc (repeating the example in video 1 on my 48 PUG)
48 PUG: 970
Archer: 1220
Difference: 250
Would a better weapon and 2 levels give me 250 more damage? I would bet that it would be close.
Conclusion: Find something other than damage to determine why Archer is OP. Damage output is not as off the wall as it is given credit for.
The original video:
http://www.youtube.com/watch?v=2LJTrQoGoUc