I didn't mean to imply it was exactly analogous, just a lot simpler, and there is a lot to be gleaned from that data. In fact, I would assume the more data you pass over it (e.g. if you proxy all your traffic across TOR) the easier it is to make assumptions about the source, unless it actively splits it across different exit nodes, which seems like it could be problematic in a lot of cases. If you have a DigitalOcean personal server you run some services on and you access it through TOR... well you might have just made the job of anyone trying to deanonymize you much easier.

> unless it actively splits it across different exit nodes

I believe it does. I believe each destination IP you connect to uses a different exit node. And that'll even switch over time. And even if you connect to 2 destination IPs from the same exit node, I don't think there's a way for the exit node to know those 2 connections were from the same user.