Not divide.
I was presuming a different system and referring to the high probability of failure in either scenario.
So if you keep [the number of accounts the number of candidates] low, you are hoping that some few specific accounts are all online and ready to forge.
That's not how Nxt works. The account that forges the next block is selected from only online accounts with an effective stake, not from all existing accounts.
I corrected your edit.

But yes I see there were some misunderstandings and I get the gist of a pretty interesting system.
Yeah it's tough to understand, even if you manage to read through all of this, and related threads!
It'd be nice if the OP was less proselytizing and more detail. Not everyone has time to jump around hundreds of forum pages to garner details.
The wiki (link in my sig) may also help.
I may have to check it out at some point.