2 things: 1st - I believe there is a peak that everyone will reach and never get back to it. I believe we all plateau once we reach our fullest potential, and once it's reached, you won't improve anymore. (keep in mind this is only for team-based modes). Dueling ofc requires tactics to win, tactics can be improved. And also hardware plays a big factor in improvement. Not sure why i'm explaining this but i'm sure you can understand what my personal opinion is.
Every morning I boot up my computer go to documents -- > mygames -- > sauerbraten -- > screenshots, open up this picture and just thank god i'm fucking awesome