From personal experience, wide gaps between parties in negotiations is usually due to the naivety of one side. Their ignorance (and/or greed) will be fueled by a lawyer who intends to cash in on their ignorance.
I'm unaware of any details in this case and do not post as an endorsement to AIP or otherwise, but I'm getting tired of the highly emotional posts and personal insults.
Poster of said messages seems to think they have a valid claim. If they're not bias (hard to believe giving the emotion they post with), then it could be ignorance on the part of HW and AIP.
Time will tell, but one things for sure.....the lawyers will end up richer regardless.