That was a great feat but not continent level+. Also most things are calced. That includes speed, size and anything else. It's all estimates. There is no proof that Kiba is slower than Soifon. It's apparent and sometimes calculated. Most feats are the same. Madara's chibaku tensei leveled a country and part of another which are smaller countries when compared to the surrounding ones. There's no proof he's close to continent level or by extension that Naruto or Sasuke are as powerful as they're hyped to be. Naruto is somewhat safe given his Shinju tree feat. There's a double standard if you don't accept Zaraki's feat as county level like a meteor of such apparent size would be even in the real world, but accept anything convenient for Naruto.