The last time a war was run over a a major US Holiday weekend it was Memorial Day weekend, which was the battle for Darkhome.
Average CP for top 10 over Memorial Day Weekend: 9,574,944 (Darkhome, 5/24-5/28)
Average CP for top 10 the next war after Darkhome: 17,010,555 (Shipwreck Cove, 8/16-8/19)

8 of the top 10 guilds in Shipwreck Cove scored MORE than the average of the top 10 in Darkhome.

Just sayin.