SM37 is "Job Overview" It allows one to see what jobs are running based on certain selection criteria. While SM50 is "Process Overview", a job in SM37 may have spawned several processes simultaneously while it is running. The number of processes would be logged in SM50. They are based on the defined type such as dialog, batch, update, background, etc.. For instance as a user logs on they logon as a dialog user and are granted higher priority than a background user as far as a processor and memory times and sizes are concerned. Therefore there is less wait time for a dialog user.
