5's vs 10's

[grouchie]

Looking to give SNG's a shot and see if they can be profitable for me.
I searched and found Aleo's spreadsheet which is definately a sweet piece of work.

When looking at the spreadsheet it gives a place to enter results for 11's, 22's, 33's and 55's.
Does this mean that it basically isn't worth it to start playing at the $5 level and below, and if i'm going to give it a serious shot to just start at the 11's?

thank you for your time.
grouch