I'm sorry to see ANTS Performance Profiler has given you this trouble. Unfortunately from the supplied information I can't tell you why it's doing this and the vast majority of customers do not have this experience.
However, I'd say the difference between most other profilers and ANTS is the SQL and I/O profiling - do you see similar results if you turn those off? (Do not record SQL and I/O performance)
You may also be unintentionally profiling other processes (Profile child processes setting).