Red Bull is now the dominant car for a number of races now, it is largely down to if they mess up setup or not if they are not. Max may try and pretend he is driving a Flintmobile, like last year's car which they started the season aiming to win all races but ended it trying to make sound like the worst car ever made and even that won the penultimate race Qatar that year.
Max's fastest lap on last lap this race was faster than any practice time this year or previous years, comfortably faster than anyone else.
It is quite worrying for McLaren as they have unnecessarily given invitation to Max to clinch the title. It is now in normal realms of possibility, they might need others to help them out.
Mercedes PUs have been more suspect this year and they degrade more than Honda ones as is so not great from performance point of view too. They have put more pressure on reliability and team by gambling with setup. Imagine if they have failure next race and grid penalty for final one. Even if they nail performance, they could be in situation where it is not enough. They have two drivers in it, maybe Oscar will luck his way to title if the other two end up battling hard.