That's it.
Since merit introduced activity lost importance.
Furthermore, your account's post history shows that you are hardly to get Merits.
Another minus point is that your red trust.
Together, it means you are probably really hard to get merits, and activitty count will not make sense.
Sorry, is it about my account? I don't get your point?
I just ask about kind of script or method to count potential activity.. I ask about that, because i'm curious if it is possible.
The answer has already been given, scroll up!.
I don't think that there are any websites existing anymore which can automatically calculate this, so you'll have to do it by hand (or build a small program.)
You registered on Oct 17, 2016. Every two weeks after that your period refreshes.
Simply check in how many of those periods you've made at least 1 post in, and voila, there's your potential activity.
Now i myself was too lazy to check exactly how many periods you posted in with a calendar, but looking at your post history + adding up consecutive postings, i'm guessing it was between 11-13 --(Which means that you'll have between 154-182 potential Activity!)
Is there some application, script or maybe some method to check or calculate potential activity of Bitcointalk account?
If you don't want to, then use achow code.
Is his old site opensource?