The Ring of Honor 16th Anniversary show took place on December 9th, 2018. The show was headlined by the match between Jay Lethal and Dalton Castle for the ROH World Title.
Here are the match ratings for the show according to Dave Meltzer. Ratings are from the Wrestling Observer Newsletter (subscribe here).
ROH WORLD CHAMPIONSHIP – Dalton Castle (c) vs. Jay Lethal
Rating: 4.25
ROH WORLD TAG TEAM CHAMPIONSHIP – Motor City Machine Guns (c) vs. The Briscoes
Rating: 3.75
ROH WORLD SIX-MAN TAG TEAM CHAMPIONSHIP – The Young Bucks and Adam Page (c) vs. SoCal Uncensored (Scorpio Sky, Frankie Kazarian, and Christopher Daniels)
Rating: 4.25
Cody vs. Matt Taven
Rating: 3.25
Here is the list of all the 5-star matches ever.
Flip Gordon vs. Hiromu Takahashi
Rating: 3
Punishment Martinez vs. Marty Scurll
Rating: 3.5
Silas Young vs Kenny King
Rating: 2.75