You really should try the Realm vs Realm before judging it so completely. I doubt in 3 hours you would have done much, if any, Scenarios or Keep sieges. Personally I'm not playing WAR right now but will probably resub for Tomb Kings. Been playing WoW a lot but after trying out WoW's PVP again I was left frankly disgusted, after coming from WAR it's like downgrading from steak back to hamburger. WoW's PVE is great but holy crap the PVP is horrible. I've had much negative to say about WAr since starting WoW again but it took only a a few times being ganked in it's meaningless world pvp to recognize just how imbalanced and unpleasant pvp in WoW is compared.
Unfortunately the solo play/pve in this game is relatively bland and if that's all you've seen/done, you've only seen the worst that it has to offer.