It`s good, that $logger_framework exists and BugWerk is not about replacing it, at best it will supplement a feature. While logging frameworks abstractly deal with the documentation of the application runtime and the formatting of said informations, BugWerk concentrates on errors and the distribution of documenting reports, which is why it comes with a more specific data model.
Furthermore BugWerk is not about replacing proven frameworks and interfaces, instead it is about an easy integration into existing processes. For that reason, BugTrap, the Java Sensor Modules ships with an appender for the Apache Log4J Framework, which frees you from the requirement of writing own incident handling code in applications that are to be monitored. The support of further frameworks is under development.
This quite common approach has 3 drawbacks:
This approach has it`s value in providing a feedback channel to the developer but its only widespread among open source projects as it reveals the internals and drawbacks of applications. Moreover it lacks automatization, fails at lazy users and preconditions technical competence on the end user side.