Why Difference in Odds Between Type 2 and Type 3 BBJ at Quad levels?

Looking at the Bad Beat Jackpot odds at Wizard of Odds I was a little baffled as to why there is a difference in Odds between Type 2 and Type 3 columns once you hit AAAKK as a requirement to win the BBJ. Seems at that point the only way to beat the hand IS with quads or above, so that the Type 3 qualification becomes redundant. Is this simply a question of "Margin of Error" in the Wizard's simulations? Or is there another reason I'm overlooking?

If I'm not overlooking something, then wouldn't it be better to combine the simulations for both types and show equal numbers for both columns beyond the AAAKK row (with the bonus of having a lower margin of error)?



https://wizardofodds.com/games/texas-hold-em/bad-beat-jackpots/

Not a fan of bumping threads .. but any feedback on this? :)