Have any evidence that both are the same regarding privacy or just your personal feelings?

one day when Apple start changing their tune on privacy policies

I don’t think this is a fair point, unless someone was making the claim that Apple is some benevolent do-good company out of the kindess of their own hearts. No one really makes those claims though, I think most who choose their products for privacy reasons simple thing they are better than the other of the main 2 options, and that like any corporation needs to be watched closely. Just because I chose an Apple device at this time does not mean I advocate that they will always be a better choice for privacy (or any number of characteristics someone may care about when choosing a phone).

almost every apple user says shit like this while using Gmail, Google docs, and the Google app on their phone

Again, just your feelings. Maybe statistically it’s even true that most do, but at least there is a choice on these things. I can and do avoid all of these, the only things I load from google are tracking scripts embedded in websites that make it through several layers of blocking.

privacy means not giving your data to ultra mega corps

Not sure this is true, surely there are large corporations that are at least better than others with regard to privacy. It would be especially foolish to assume the inverse of this, that just because a company is small that they will respect privacy or act better.