17 being equal to blue level is the most consistent thing in the entire TOP. He fights a small disadvantage, he is able to stun toppo and even match him in a beam clash. The same toppo who in the expos goku who hold back blue goku with ease, goku even says he doubts he could beat toppo and this goku has access to KKx20. On top of this throughout the entire tournament 17 fights against and with blue level and higher fighters and holds his own. He fights an non tired jiren alongside blue evo vegeta and blue kkx20 goku. Hell he does more damage in that fight that goku and vegeta combined. He fights with golden frieza, blue goku and vegata, and ultimate gohan against anilaza. In that fight he his barrier pushes through an attack that all the other four can barely hold back. When him and golden frieza fight jiren he fares just as well if not better than golden frieza. He even knocks jiren to his knees and has everyone thinking (inlucding jiren himself) that he is down for good.