It is possible to build a viable smartphone without Slide to Unlock or making it look like an iPhone (Palm did it, Nokia did it, even Samsung did it with the Galaxy S3). It isn't possible to build a viable smartphone without the various UMTS patents. That's the key difference here.

Also the rates that Samsung is asking aren't consistent with other licensees as Samsung is tying the rate to the device rather than the baseband processor that uses the patent. Asking for $25 royalty on a $10 component is unreasonable, especially when said component requires a 100 other standards essential patents to function.

Does a patented oil pump cost more if fitted to a BMW verses a Ford Escort ?