Hazed,
That would be an indicator of sorts, but...
What about fans of Russian (non-La-7) aircraft? They're going to be low because that is where they are competitive.
The same goes for Japanese aircraft.
Some British aircraft like the Hurricanes, Spitfires I and V and Mosquito are also low altitude aircraft.
The Mosquito peaks in speed at 13,000ft and that is where I normally level off. Sometimes I go higher if I have too, but the Mossie is a dog up there. My normal peak alt is 13k and I fight down from there, not because I dislike high altitude, but becase my chosen aircraft is a low alt tuned kite.
You're suggested numbers don't tell you what a given pilot's style is.