Logic in Audience Containers

This is my first time dealing with Audiences in Target (I normally do reporting in workspace), and I'm not sure if the logic for these audiences works the same as segments in workspace.

Here's our scenario: we have two types of products - core and marketplace

So customers would fall into one of 4 groups
1. doesn't see any product

2. sees only core products

3. sees only marketplace products

4. sees both core and marketplace products

If we were to create an audience where "product does not equal marketplace"

That would end up including groups 1 and 2, right?

Whereas if we created an audience that says "product equals core"

That would end up including groups 2 and 4.

Is this logic right? If not, what logic would I need to include groups 2 and 4 in the audience.