WAR failed for the same reason that SWTOR failed. Horrible game engine, unable to handle any mass (like 10 vs 10, lol) PvP at playable framerates.
The ideas were good, and the scenarios (WAR's warzones) were very fun.
Wouldn't blame Gabe for WAR's failure. I blame engineers.
Same applies to SWTOR.
This game can't handle 10v10?