When adding together the line-level timings for a method in the source code view, the sum may be greater than what is shown in the method views (the grid and tree views).

The line-level timings to not include the profiler's overhead correction, which subtracts the time that ANTS Performance Profiler believes it had spent doing the actual calculations that it needed to do in order to work out the method time. If you go to ANTS Performance Profiler's options and disable overhead correction, all of the times should match.