There is big trouble i find with ur tests viks vs goths, vik has better boom and he doesn't need castle to mass champs first while goths boom is slower and needs a castle to rule, so in real games boom vs boom a vik player would go champs first to abuse the boom advantage, going bersekers is a bad move imo you need to build atleast 4 castles and doing so you will lose the time gained in the boom, in pure boom figths i'd go for goths because they can do powder units and use infantry as meatshield.