This is not really a useful way of thinking about the issue, although it is common. Every IT service collects data. It's impossible to provide people access to e-mails for example, if the service provider doesn't collect those e-mails! It's impossible to sort people's photographs by date, and present them in that order, if those cloud storage services can't extract that date from a photograph's EXIF data! Basically, it's impossible to build such services without having software at least partially inspect the data that is uploaded to their servers, which is why all cloud service providers must admit to doing so. That makes the ToS of all cloud service providers sound very similar. The differences are only in the details, but those details can have significant consequences.
One of the biggest difference is how and what else the collected data is used for! Google is the only company that combines all the data collected from across its various services into a single and centralized behavioural profile. MS doesn't allow it's various services to exchange information in that way. Google also fails to precisely specify which 3rd parties are provided access to that information, implying that is their business alone. MS however specifically states that the only 3rd parties given access to that information are the IT workers that administer their various data centres across the world. Despite looking rather minor, those are huge differences, upon which the continued cooperation between MS and many of their enterprise customers depends.
Behind the scenes, MS and Google are two very different companies with completely different business models. Both companies have very different incentives when it comes to user's data. For one company it's practically the only way to earn money, which is why their CEO frequently take the position that nothing should be private. MS on the other hand has a lot of money riding on their ability to keep their customers data confidential. In many ways they are the complete opposite of each other.
To be fair, Google does allow you to take complete control of your information, in a far more comprehensive way than MS does. Very few people make use of those capabilities however.