These are two different Mac OS releases. Apple has made many under the hood changes with Mac OS. One of them may be the status of being installed. This is kind of the department of repeatedable redundancies. Saying it is installed when you know the cycle count is kind of redundent since there is no way to know that unless it is installed.
I'd worry about it more if you unplug the machine, and immediately lose all power. Or if I noticed the wristpad or its underside looks warped on the outside. Short of those two conditions, the battery should be fine.
Maximum battery like under 83% can also indicate a battery replacement will be coming up soon.