Apple offers full photo encryption as if this year, whereas Google can - and will - give your local gestapo your photo roll, mysteriously delete your account for taking pictures of your kids, and do god knows what with them for data mining.
Sounds[0] familiar[1]...
That being said, I can use open-source projects like Syncthing or Owncloud to handle my syncing, and skip the whole mutual trust part. Though I'm sure the NSA does a wonderful job auditing Apple's private codebase, for whatever sense of security that offers.