That’s one part of the reason: Google seriously angered the judge by deleting possible evidence (Google got in similar trouble in the anti-trust trial in regards to their search engine). Additionally there were emails that showed that Google was very worried about Epic and that they bribed phone manufacturers to not install pre-install a Fortnite launcher (or other app stores) on their phones.

So there was a clear paper trail that showed how Google execs used their control over Android and the Google app store in order to undermine Epic’s efforts to circumvent having to pay Google for being included in the app store. That’s the main difference in regards to the trial against Apple where the evidence was not that clear-cut.