Why does every major city invasion fails?

[flaggel]

My server in balance is like 33(Horde)/100(Alliance) so usually when players are building a group on the horde side to raid Stormwind, when the players are grouping up what happens, or what happened last time, some players would tell their friends on the alliance side and.... ya

[Deleted]

Well just tell them at the last moment, that's all ..