News Original From: 
Alrighty! I've been asked to talk more about why I am so
excited about Warhammer Online. I think that I can achieve that in this post, so
for now I will try and accomplish killing two birds with one big heavy stone.
I'm seeing more and more comparisons between the two games. Some of them are
spot on but others are way off base. I feel it's prudent to clarify a few things
for some people who may either not understand or be confused about the clear
differences between these two games. It's important to try and put all bias
aside and drop the personal feelings about which is a "better"game. They are
both great games. Objectivity is key when explaining the similarities and
differences. Warhammer is not WoW. WoW is not Warhammer. Each game follows a
very clear
path.
Similarities
Graphics:
Both games look similar in that they have adopted a high fantasy "cartoon" look.
While Warhammer steps slightly beyond the pure cartoon look and introduces some
grunge you would have to be blind to say that they don't look similar. This is
the part where most people bring up the infamous supposed and perhaps never
existing lawsuit filed by Games Workshop against Blizzard. All things aside you
can't deny the similarities. For your viewing pleasure, I present a few
screenshots I found here that clearly show the differences. Please keep in mind
that WoW is obviously older than WAR and that these are not my screenshots.



I think Penny Arcade says it best.
Races: This
one is a given. Orcs, Elves, Dwarves, Goblins. See previous regarding
speculation.
Two Factions/Lore: WoW has the Horde/Alliance and WAR has
Order/Destruction. This is a huge similarity and in many cases it relates a lot
to the lore of the game. In the Warcraft lore and in previous Warcraft games it
has always been about this huge fight between the Horde and the Alliance. It's
always boiled down to their never ending struggle. Other enemies have been
introduced and both sides have teamed up but at the end of the day it's still
the Horde and the Alliance. Warhammer is very similar (the MMO at least... I'm
not sure about the tabletop stuff.) There are these two factions and they want
nothing more than to rip each other to shreds.
Quests and PvE: It's a MMORPG. Both games will have PvE and
quests. (See latter Differences for Quest explanation)
Talent Trees: Recently Warhammer Online introduced a very
popular character development style that WoW itself decided to use back in the
day. Talent trees and character customization through choices is something both
games share. Right now WAR's system is still under heavy development and we've
only recently heard about it in the "whats new"podcast (embedded below) it's
still necessary to mention that both games share in a similar
idea.
Raids: Both WoW and WAR have Raids. (See latter
differences)
PvP: Yes, both games have PvP. BUT...