Nix and Williams are essentially the same type of quarterback at this point - their season stat lines are darn close, too. He can get out of the pocket and make plays, but isn't very accurate and needs their run game (which he is a part of) and defense to win games.
Denver is a tough place to play, but warmer temps there for the game should actually help the Packers be able to stay balanced and hopefully slow down that pass rush. I can definitely see this game turning into a defensive struggle, though. The Broncos have a much better defense than the Bears, which has helped them win ugly at times - feels like they've played most of their tough games at home thus far, the exception being a road win against the Jekyl and Hyde Eagles team early this season. That really is their best win now that the Chiefs have proven to be average. They beat the Texans by a FG on the road without Stroud, played arguably the ugliest game of the year in Europe against the Jets, got the Bengals at home right after Burrow got hurt, eeked out nailbiter home wins against the Giants, Raiders...basically they are probably an above-average team that has found ways to feast on a 3rd place schedule that includes a pretty weak NFC East.