I did an unscientific comparison of posts to the threads I follow. I have approximately the same number of forums that I follow on ATP and DG. After a seven day period I compared the number of posts either I made or someone else made that were related to my posts. That number on ATP was 42 and on DG the number was 13. I have noticed this same tendency for the entire 2014, and the discrepancy between ATP and DG seems to be growing wider all the time.
ATP rocks!