In the end, it doesn't matter what we think, what the commentators think, that past Olympics champions think... it's what the technical caller thinks. Another technical caller also decided the jump was underrotated at TEB. It happens.
Percentages for other "big jumps," (including 3+3's, solo 3A's, 3A combos) this includes Nationals and other events outside of the Grand Prix... basically every time the skater has been in a competition this season: Yu-Na Kim's 3Lz+3T = 50%, 3/6; Rachael Flatt's 3F+3T = 67%, 4/6 ; Mao Asada's 3A+2T = 50% 3/5; Mao Asada's solo 3A = 50% 2/4; Miki Ando's 3Lz+3Lo = 0%, 0/1 (attempted once and UR); Alena Leonovo's 3T+3T = 40% (20% if the fall is not included); Carolina Kostner's 3F+3T = 17%, 1/6 ; Laura Lepisto's 3T+3T = 33%, 1/3; Elene Gedevanishvli's 3T+3T(+2T) = 67%, 2/3
So actually... You are a bit off there, from all their competitive skates this season, Yu-Na and Mao show the same percentage of landing their "big jumps," and Rachael Flatt shows an even higher percentage than both of them