According to the keynote at least, the integration is literally just Siri offering to defer to ChatGPT for some requests. Basically a more advanced version of “here’s what I found on the web” if it doesn’t know what to do otherwise.
Funnily enough, Apple isn’t even paying OpenAI for that, they’re literally saying it’s for exposure.
That’s not what that page is saying. It’s terrifying enough that it’s a tie, there’s no need to make up fake polling information.