IIRC, they held a poll to ask if KS backers would be okay with Slacker Backers having access to the same rewards as the KS backers. The results of the poll indicated that a majority KS backers were okay with this. Then Awesome Japan announced that they would *not* be offering the same rewards to Slacker Backers.
On the face of it, it seemed to many people that AJ was disregarding the results of the poll. However, it might also be true that since there were some respondents who were not okay with allowing Slacker Backers to have the same "exclusive" rewards (in other words, it wasn't unanimous, or a landslide in favor of it) then AJ was trying to honor the feelings of those people. Someone correct me if I'm mis-remembering things.
Personally it didn't seem like a big deal to me either way, but people were already upset about AJ's amateurish videos and updates with typos and awkward phrasing, so it was one more thing that added to people's frustrations with them.