Nah it's not. Pitchers get yanked quicker (more appropriately) leading to more effective (albeit entirely accidentally) pitcher usage. No one goes through the order more than twice if they're not on top of their game.
No. Again. WAR compares a player's offense, defense, base running to league average, then adjusts all of that relative to position (then adds replacement level).
http://www.fangraphs.com/library/misc/war/positional-adjustment/