I do occasionally compare my segments to those in my age category 55-64 and also my weight 180-199 lbs. I don't think I have any KOMs in either, at least not for competitive segments. I will sometimes be in the top 10 for age and or weight, and then I'll compare those lists, and sometimes I'll have the KOM for that age AND weight group.
Next is comparing segments ridden on an odd numbered, first Tuesday of the month following a leap year when the moon is in the Seventh House and Jupiter aligns with Mars.