I think Qualcomm isn't a household name in the same way as Apple, Microsoft, or even Intel. I doubt most jury member have special feelings for it, and the judge should disallow the defense to appeal to Qualcomm's American identity. I think it even less likely that a typical jury member would know the nationality of ARM or its owner.
In other words, I think Qualcomm's nationality isn't enough to get them a unanimous verdict.
You name the real issue here: "feelings".
And the tradition focussed jury system was designed to adjudicate cases with local customs and laws in mind where the juror's intimate knowledge of how things really stood between neighbours added value and quality to the decisions made by a court presided by judges much less knowledgable in those aspects.
It just doesn't make sense in abstact international intellectual property disputes, where most jury members have nothing but their gut feeling to contribute.
Qualcomm very clearly thought themselves very clever to "buy" Nuvia via licensing fees not paid to ARM. And that is just as clearly a violation of the spirit of ARM's licensing conditions and thus very bad faith business conduct if you've accepted them.
ARM has segmented its customer market for very good reasons which stem from how they wanted to ensure their economic future. Qualcomm and Nuvia understood those terms when they signed them.
And while I would subscribe to the idea that once a technology becomes so ubiquitous that "the entire planet runs on it", should even be wrestled from the hands that designed it if it's not voluntarily given (e.g. Chrome by Google), in this case it was just a case of Qualcomm's senior management not liking the numbers on their alternate business case, not ARM abusing its power over an ISA.
Quite a few Americans seem to love that type of Wild West "move fast and break things" behaviour, because that's how many tycoon fortunes were made.
As a European from the continent I judge that as the least attractive aspect of a people, some of which have been extremely generous to me personally in the past.
But those Mid-Western folks just didn't show that musky behaviour exemplified by newly arrived South African immigrants, who are not no longer satisfied with their takeover of the US government and feel compelled to post unwarranted advice on how Europe should be run.
Again, the real proof in the pudding would be to have this case run through Japanse and British courts and then compare the results.
Justice clearly isn't blind and carries a flag.