You are correct. I had looked at the start of the RPGWatch forum topic where they mentioned the collective rewards and bonuses for those who contributed the most, but not the donation page where it details the individual rewards based on donation (though if you are getting a direct reward, technically I don't think it counts as a donation).
Also, a couple people have mentioned pledging on kickstarter and then giving a little extra through RPGWatch or RPGCodex.
