So in my last thread, someone mentioned that there is slight to no edge gained from splitting from two to three hands even when others are sitting at your table.

With that being said, if I'm playing a $500 max game, is it better for me to play 2 x $400 or 3 x $400?
I am avoiding table max call out. Are there any benefits of putting out $400 more from an extra hand?

If you don't mind a simple Explain Like I'm Five response as to why. That'd be great as well. Thanks!