THE REDUCTIVE MATH of Rotten Tomatoes might have its detractors, but you likely won’t hear the makers of “Thor: Ragnarok” complaining.

That’s because the third film in the Thor franchise now sits as the highest-scoring movie ever in the Marvel Cinematic Universe, according to the film-review aggregation site.

Yes, although 2008’s “Iron Man” is the undisputed granddaddy of the MCU, its long-reigning score on (94 percent certified “fresh”) has been eclipsed by “Ragnarok” (96 percent).

That’s not simply an early tally, either. The franchise’s pivot to a more humorous tone is registering with critics at large, as “Ragnarok” (opening Friday) has 125 positive reviews out of 130 total.

Among Marvel universe films, “Ragnarok” is immediately followed on the site’s “Tomatometer” ranking by “Iron Man,” this year’s “Spider-Man: Homecoming” (92 percent), 2012’s “The Avengers” (92), 2014’s “Guardians of the Galaxy” (91) and last year’s “Captain America: Civil War” (90).

And last on the list of the 17 MCU films? That would be 2013’s “Thor: The Dark World” (66 percent) — meaning that “Ragnarok” rates as the single greatest uptick between films for any Marvel character’s franchise.

“Thor: Ragnarok,” directed by Taika Waititi, has also grossed $109 million overseas as the studio sets its sights on a domestic debut north of $100 million.

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