I have no idea whether or not that image is accurate, but it's worth noting the image deals solely with mobile-related patents. This lawsuit was related to the H.264 on the Xbox.
Considering the chart doesn't even have Apple suing Samsung, I'd say is either very inaccurate or very out of date.
It doesn't have Motorola suing anyone either, which the OP sort of demonstrates is false.
IIRC, they were started by Motorola but Google continues them after Motorola became part of Google. Some companies have better PR departments but generally, that's the only difference when it comes to wireless patents.
This is the Motorola part of Google, which is being sued by both Apple and Microsoft, so it's still defensive.
If my reading is correct, they only withdrew those claims in the ITC (where Moto/Google was seeking a ban on the Xbox 360) but they plan to continue a lawsuit against MS over those same patents. This appears to be fallout from Google's agreement with the FTC to abuse RAND patents slightly less.