Those numbers don't really tell you anything about your actual current fitness. They are used as indicators for you to assess your fitness progress.

I don't know for certain, but I expect that many of us that have always been active most of our lives will have a quite higher VO2max. But that number is a guess by anything but a actual lab test. And it can be affected by how accurate the information is that it is based on.

When I corrected my maxHR in Garmin Connect that was 30 BPM over my actual maxHR and corrected my weight. My VO2max number it gave went down. Not sure which affected it the most or if either was actually the reason.

Your FTP will improve fast if you do intervals or attack most every hill you encounter on your rides. Also helps if you can do over 100 miles a week. Not sure how to equate that on a trainer that doesn't go anywhere! <grin>