It's one thing to copy a game mode and another to copy the maps and even lobbies.
It is pretty sad but they do it because they know how successful cubecraft is and want to be just as successful. I understand it's hard coming up with a new game style.. I mean, even movies are all copied by one another, just a little adjustment and character change to make it different.
Cubecraft is capable of creating new games and making awesome updates which are original, that is something they can never copy. It is one thing that makes cube a couple step above them and more popular, If I were a new member looking for eggwars, I'd find the original because awesome people came up with it and awesome people will continue making amazing games.