Both charts are great, but I also noticed that their Y-axis aren’t consistent. So if people aren’t careful they might not see Jenkins as favorably as it actually is. So here is the graph, comparing # of commits in the year 2012. They both only includes the core and in the master branch:
On average, we have 41.2 commits per week, compared to 9.7 on the other side. If you want the raw data, here is the Excel file.