For privacy, I guess you can have full confident that Apple has the intention to keep your data private. But do you have full confident that Apple has the competence to fulfill that intention?

Google doesn't have the intention to keep all your data private, sure. They are an ads company after all. But for things they want to protect, in most cases they are competent enough to protect them.

(Disclaimer: I also worked for Google, but the "employer" I mentioned in my original comment was not Google)