Plugs are not oil fouled but 2 and 5 seems a bit darker than the rest. I wouldn't be too concerned about that. However there is loss of power. My maf went bad and I replaced with a eBay one. Not happy. Could be due to that as well so I'm going the Bosch replacement route. It was one main reason to do the test. Others would be because car is at 92k miles and of course the most common reason being that I need to tinker around.
Given what you and Jake said I think I'll run another test when cold and see what comes up. No plans to tear down the motor - maybe not yet. Just doing some health checks while I'm under the car checking some shifting issues.