It didn't, there were several hours between WF Trilliax and Spellblade (5-6 I think?).
He's prolly talking about his own guild, Limit, as they did reach 4/10 within 3 hours, they just started later than everyone else.
Not exactly sure what point he's trying to make tho as he's comparing Limit with BDG which like I said earlier is a world 50 guild. If sisters took them 30 pulls it will probably take <10 for better guilds.