True, ie Cinera was too quick at calling it a top tier feat or something like that (since I think a top tier would hold against such a force better tbh) and on the other hand, claiming Sanji or Jinbe did the same is massive lowball. Apparently this blast destroyed a part of the entire island whose size was calced around 10 - 15km. Thus, even if it's a part, it still holds much AP I'd say.
Here are two different
calcs.
Therefore, momentarily stopping the attack was still great Grandmaster stuff!