There are several ways to compare activity between different accounts.
Comparing Multiple Accounts in a Network
If you have multiple accounts in a social network, you can use channel reporting to compare activity and toggle between the accounts. Go to Channel > Select the network > Under Activity Timeline, click to unselect the account you want to remove:
You may also click the dropdown on the right side (Showing # of # Profiles) and uncheck the account from there:
If you go to Cross-Channel > Summary > Profile Comparison, you'll find the channel activity across all social profiles. The graphs are completely interactive and you can simply unselect the profile to remove it from the graph:
Under Cross-Channel > Profiles, you'll find a summary of different activities across all social profiles connected to the project: