I agree with the original post here. . For super guild's to take over the entire map in a few hours demonstrates the need for a better structure or way of pairing the competition. Some of the super-guilds seem to be nothing more than a collection of people who was here when the game first started. Congratulations to these people that dedicated the time and effort to achieve the positions you have, but Inno should also be trying to encourage newer players of the game to enjoy participating in GbG, The enjoyment of playing this game is advancing your city and GbG prizes are some of the best ways to do that.
I'll have to agree with @Pericles the Lion here. It depends on what world you're in, but in Tuulech (US19), it is very easy to join a top GBG guild once you have a level 80 Arc. I joined my current guild after 3 months of playing, and we're strong enough to checkerboard the map 5+ times/day. Granted once you join a guild with that kind of strength, for newer players, the biggest bottleneck for taking in tons of GBG rewards is units, so unless if you were in an era where 8 artillery rules supreme and stack your city with over 30 artillery barracks, you will not fight as fast as more developed players. You may be in a world where people expect you to be in FE if you want to join the super-guilds, so you will have a different experience than me.