No difference? That's pretty impressive. I wish I was able to look at your process. Either your engineers are extremely smart and anal about their practicies or your domain is very simplistic (ta-da lists).

At my previous start up we had unit tests run on the entire system automatically after every check-in (with CruiseControl) and whenever someone broke a test suite, everybody got an email with name of the offender and diffs of his code against the trunk.

We also had a "beer rule" about violatros gettings drinks for everyone, to make the process a bit more exciting.