What makes you think that raiding (or logging raiding) and pvp are a decent measure of activity?
While I’m not sure, to be honest, how good or not it is, if I were to guess, I suspect it might be more accurate for Classic than for Retail.
In any case, would you be so kind as to provide some links, or an explanation as to how one would use warcraft logs to see the numbers of people raiding and PVPing in both Classic and Retail?
What I have been going off of have been things like these posts:
“As of 2022, around 4.8 million people subscribe to World of Warcraft.”
ref: https://webtribunal.net/blog/wow-player-count/
“Last 30 Days, average monthly players: 5,560,501 monthly gain/loss: 459,054, loss %: 0.09, Peak Players in a Day: 500,445.00”
ref: https://activeplayer.io/world-of-warcraft/
“Subscribers: 120,538,541, Daily Players: 2,290,232”
ref: https://mmo-population.com/r/wow
Which are all different, and I’m not sure how accurate any of them are, but it’s something rather than nothing, just as IronForgePro is something rather than nothing (raid logs) for gauging WoW Classic population.
Anyway, I don’t think I’ve seen any source that suggests anything other than there being substantially (exponentially) more people playing Retail than Classic, but I don’t know how to verify that. If you could provide whatever insight you may have, that might be helpful.