Good thinking, adding the firewall comparison. Maybe edit the results a little bit, if someone is this new to securing their box, they won't have a clue what some of that means. Maybe bold some of the important stuff.
In the meantime, this is whats important in that comparison-
No firewall
1 Ports Open
1048 Ports Closed
7 Ports Stealth
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Firewall
0 Ports Open
0 Ports Closed
1056 Ports Stealth
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1056 Ports Tested
The second run is better (w. Firewall) because it looks like the computer doesn't even exist, therefore hiding it from worms or scans from hackers. The difference is that you go from carrying a target to not existing at all to scanners.