Reynard said:
That total of 8 to 10 sessions was going from 9th to 10th level.
Oh.
That's quite a different matter!
I think there's a balance between real time
in play at a level and real time between levels that can get tricky. Playing just once or twice a month is different from playing once or twice a week, and playing every other night is different yet again.
The comparison is probably going to break down, in any case, because I don't think "10th level" means quite the same thing in 3e as in old D&D.
In old D&D, the number of x.p. it takes a fighter to go from 9th to 10th is the number it takes for each level thereafter. With adjustment of awards for level, the actual number needed tends gradually to rise.
Up to that point, I reckon that in an "ideal" situation (like a "perfect gas" or something) a player would probably rake in x.p. at a fairly constant rate. If it took half a year to get the x.p. for level 8, then it would take about half a year to get the same amount again for the doubled total at level 9.
In essence advancement comes to a crawl once you hit "name" level. Instead of 9 levels per year, you are looking at maybe two. You have in a sense "made it", and it gets increasingly harder to find challenges that will deliver full x.p.. (When you've beat up Odin, it's probably time to retire.)