Debug and resolve errors faster
Knowing there is an error is one thing, having a clear stack trace, with the state of your code at that time is another. Rollbar provides the arguments and locals with your stack trace so you can not only the see the code causing the error but the payload and state at the time of the error.
Bugsnag has no advanced stack trace data and leaves you will little more than log data. Rollbar is a true error monitoring platform that understands what you need to solve errors quickly.