You are wrong again. You should read the entire court case.
Cloanto is clearly attacking Hyperion saying that Hyperion has no rights at all since the settlement agreement according to their view, is now void due to breach of contract.
And not only that, they are the ones who are complaining about AmigaOS 3.1.4 with wild claims just to muddy waters even further.
Understand that Cloanto legally needs to clearly position themselves as holders of development rights to legitimate their 3.x product line, which is one of Hyperion´s complaints.
Again: there is no angel and no devil here, in both cases it is just the search for the destruction of the other "competitor" company.
Capitalism at its best. 
No, I am not wrong. Simply, because Cloanto says the settlement agreement is now void due to breach of contract does NOT mean the breach was due to Hyperion's abuse of it's developer rights. Hyperion, has already breached it several other ways. Specifically, distribution of software they have no rights to
(e.g. Kickstart 1.3) and trademark abuse (e.g. registering Cloanto's trademark in the EU and claiming rights to Cloanto's Amiga trademark).
The above are only few examples of the numerous Hyperion breach's, but they are certainly the most blatant of them. The possibly that the settlement agreement could be voided as a whole, which may affect Hyperion's developer rights does not mean Cloanto is specifically attacking Hyperion's developer rights. It is merely incidental.
BTW, even if the settlement agreement is voided, Hyperion can still continue with development and distribution under it's previous OS 4 licensing agreement. Whether or not this restricts Hyperion in some ways is not exactly known.
The settlement agreement is not incidental, it the core of the matter.
Whoever wins in this point will ruin its adversary.
If Cloanto gets the resolution that the the settlement agreement is void, Hyperion will loose absolutely all Amiga rigths (including OS4 rights). This is because the previous license agreement has been legally declared breached by Amiga Inc., and that is why they had to make a settlement agreement in the first place. So if there is no settlement agreement, there is nothing to support Hyperion.
If Hyperion gets the resolution that the settlement agreement is still valid without any modification, they will be awarded their claim of loss of revenue which will most likely end up edging Cloanto into a bankrupt situation due to discontinuation of 3.1.4 online sales, 3.x development line and 3.x physical roms between other things.
My take is that just by witnessing what each party has done up untill now, they are both confident they will crush their opponent in court.
Also keep in mind that many times court cases are not won or lost by the core arguments themselves. Many times they are resolved based on legal technicalities.