There've been a number of complaints regarding the Arms artifact weapon, here are my thoughts regarding the issue on Alpha for those of you not currently enjoying forum access.
http://us.battle.net/wow/en/forum/to...74499?page=1#0
Since I know many of you don't have access to the Alpha, here are screenshots of the artifacts in game, as I think they they look better than some of the WoWhead preview versions.
the Warbreaker
Vengeance of the Fallen
Flame Reaper
Wrath's Edge
Here is a comparison to the Fury artifact weapon.
Here is a rough comparison to Greatsword of the Inferno.
HUGE DISCLAIMER
I know it's inevitable, but please try to refrain from needlessly commenting on whether or not you like the design of the weapons. Asthetics are something that is entirely personal. Some people don't like swords, some people like pointed edges over blunt, some people don't like skulls, the list goes on. This thread is specifically intended to discuss modifying the weapon without completely redesigning it.
Followup
If you don't agree, what do you think would help define the Arms artifact, to better differentiate it from being "just another two-handed sword"?