You mean 3x faster for you, right? We're talking about a geographically distributed system here... for me it's not too different. Or do you mean their DNS servers are somehow by their nature 3x faster than Google's at responding?
https://www.dnsperf.com/#!dns-resolvers
Cloudflare are a CDN company. Running a fast geographically distributed system is their core competence.
Google I have essentially no trust in at all anymore (or maybe ever), Cloudflare I trust to a ‘reasonable’ degree; by that I mean I don’t believe they would (at the and leading up to the time of writing this comment) sell identifiable user data from their 1.1.1.1 DNS service and they have a very high technical skill level when it comes to internet security especially with regards to routing and network metadata. However it’s still not ideal or even slightly close to perfect security and while I’d trust Cloudflare over Google in a heartbeat - like anything that could change and better options that are also easy to use may (will likely) pop up.
https://1.1.1.1/
https://www.dnsperf.com/#!dns-resolvers
My Google activity page shows a big fat "No Activity". I have no doubt that they have plenty of my personal data rattling around on various servers, but Google at least pay lip service to offering you control over your data. European data regulators would be extremely displeased if they learned that these controls don't actually do what they purport to do.
https://myaccount.google.com/activitycontrols