asked for extra time to compare two offers and it went way easier than I thought

Got an offer Monday with a Friday deadline, and I'm still two rounds out from a company I actually like better. Emailed the recruiter asking for till next Wednesday, said I wanted to make sure I'm making the right long-term decision instead of admitting there's a second process going. She wrote back in like twenty minutes and gave me till Monday, no pushback. I was bracing for a whole thing about how they need an answer to plan headcount. Anyone know if it's normal for them to just say yes that easily, or did I get lucky? Kind of paranoid now that saying yes too fast means the offer wasn't that serious to begin with.