Ok time to go all Business like now:

Warcraft and Warhammer both occupy the same nieche market, Fantasy MMO more or less inspired by the Warhammer world, using EQ/MUD decendant mechanics.

Basic methods of sucess when going into compitition against another person's product that holds the same market: AKA how to beat them out: AKA why WAR is currently inferior to WoW.

Superior product accessability: Warcraft is availible in most civlizations that have internet and has a 14 day downloadable free trial. War is much less acessable no free download from Mythic, not mas many countries acessable.

Superior advertizment: Even IF Blizzard WASN'T currently in the middle of a huge TV/internet advertizing binge (I swear they practicaly PAY for Wikigaming) the sheer word of mouth from 11 million players is far greater than mythic's ability to hype.

Lower prices: Same product at a lower price will attract people, while buying all the WoW discs is currently more expensive the basic retail is about $10 and the client is free to download. War is $40-$70 for the discs. Both function under a $15 a month subcription.

Superior quality: Now for arguments sake lets agree that while certian people (Who offer to SKOOL you if you disagree) think Warhammer is the best game out there, the majority (Myself included) of the people who tried it were NOT inclined to subcribe. The primary reason being that either they thought it was not an equal or superior product or they coulden't justify paying for it.

This IS the big thing, while WAR was innovative it really felt to me at least like a beta when it was released. And the RVR areas are NOT well designed, and somtimes the systems used are not innovative but primitive. (click on flag to take town.....)

Final one occupy a different market: admitedly WAR tried, they tried to occupy a nieche in a nieche market (PVP focused, Fantasy MMO more or less inspired by the Warhammer world, using EQ/MUD decendant mechanics.)

But besides that nieche being smaller, WoW happily upgraded it's pvp a huge amount shortly after WAR's release.

In the end though it all comes down to quality and that is why Mythic has failed to entice 70% of the people who bought the box to play WAR.