Felix, can you please take a look?

Lighthouse accepts a lot more "display" modes defined in W3C Web Manifest:
Chrome only accepts Standalone & Fullscreen,
see https://cs.chromium.org/chromium/src/chrome/browser/installable/installable_manager.cc?rcl=20032a5cd3037ac303100cae6585e279d6908c23&l=380

while Lighthouse accepts 'browser', 'fullscreen', 'minimal-ui', 'standalone'
see 
https://github.com/GoogleChrome/lighthouse/blob/9f91ab405ca89882f40a71c6aef5dc6dc08543b4/lighthouse-core/audits/manifest-display.js#L43

In the case of superbowl.com, the display field is left unset. Lighthouse assigns "browser" by default and accepts it, while Chrome rejects the Web Manifest.

(Lighthouse assigns "browser" by default, see
https://github.com/GoogleChrome/lighthouse/blob/9f91ab405ca89882f40a71c6aef5dc6dc08543b4/lighthouse-core/test/audits/manifest-display-test.js#L54)