If you look at the bottom of each, they show which tiers get which badges.
Digital tiers: Kickstarter badge is included in the $35-$80 tiers.
Physical tiers: Kickstarter badge is included in the $65 and $75 tiers.
There is no overlap with the KS badge and the other badges, though I'm not sure why. I have to wonder if some higher pledges wouldn't have preferred having access to the 'K' badge.