No, he was clutching at semantic straws. Your pointing it out showed your upper hand.
All you can hope for is that you planted a seed. It is just a trivial thing for sure, but every JW is quite invested I the JWs being right about EVERYTHING. To be wrong without the FDS saying so would show a lack of holy guidance.
You may have pissed him off, and you definitely attacked his cult personality which is a huge no-no. Don't expect to get anywhere with this approach. If you were about to speak like this without him screaming and runnign away, you may be able to plant more seeds without activating his cult persona.