I'm ranked #3, but it says I'm the 4th seed. If I'm ranked #3, shouldn't I be the 3rd seed?
Playoffs are broken differently than Waiver ranks. For the playoffs, division records are taken into account; the league rank just puts all of the entire league into one pool.
You are the lower playoff seed because GOIN FOR 6 has a better division record than you (division record is not taken into account for total league rank).