Nice comparison, though you aren't able to test that which is the real intent of virus killers of course, namely killing viruses...
Some things I've noticed myself is NAV takes an exceedingly long time to open up its main interface when launching that app (due to software bloat and ram hogging no doubt). It's also not particulary fast at virus scanning.
NOD was unable to auto-update until I selected a different web address than the default. It also opens the main window in the lower right corner of the screen and the program module windows to the RIGHT of the main window, which means they stick outside the edge of the screen, thus making me (the user) believe they were refusing to open altogether until I remembered the windows attach on the right side of the main window. Dragging the main window to the left revealed the module window. A bit annoying.
You forget to point out NOD is also very cheap.