Which of the following tournaments has a greater EV:

1) 3-table/30-entrants.
2) 2-table/20-entrants.

They both have the following in common:

* Payout Structure: 1st=50%, 2nd=30%, 3rd=20%
* Both identical: buy-ins ($20+$2), starting chips (1500), blinds (10/20, 12-minute), freezeout: no-rebuys, no-addons.

My first thought was that the EV would be the same... since the odds of winning in #1 is 1/30, and in #2 is 1/20. However, the # of people that you have to beat isn't really 50% greater, though, since there's another table that will dwindle it's own #s. Would it make a difference if the tourney was a shootout?