No he can't. That's assuming. Kabuto learned creation of all things and while he isn't the Sage's level, he was only manipulating the structure of the cave. If the Sage could reality warp, he wouldn't have had to seal the Jubi in the moon.
He isn't exactly my favorite main character of all time either, but compared to the friendship and will speeches and goody two shoes moments and Nakama power ups Naruto and Natsu have been having he isn't that bad.
Ten tails isn't all chakra because others have it now. Also even if ki = chakra, that doesn't mean the quantities are the same. The top level Naruto characters are only Moon level. Bills can pop the galaxy. Buu can absorb him, or any number of characters blow them up casually. Just because here power types are equalized doesn't mean the amounts are. TOAA from Marvel has all cosmic and every type of energy and he is multiversal. There's HUGE difference.
No not sub sonic, supersonic . But Good question. I remember originally that was the translation given but I can't seem to find them. I think vice even had a thread about Gai's Daytime Tiger attacks and in it was Gai referring to it as supersonic.
Maybe he can't bust a moon but based on what we know of him he's still above Aizen. Aizen is hax but this is a level above him. Even as an immortal he can be beaten via sealing which unfortunately for him Hagoromo can do.
This fight has been done. Also assuming this is current Ichigo, it can be assumed he's stronger but he is featless. If its Ichigo at his strongest point with feats, the Dangai form he would win. If it's any other form Luffy would win. Except maybe H2 Ichigo.
By Gai's own claim it was only Supersonic. Also Luffy's red hawk ignited underwater where he is weakened immensely AND was under 5+ kilometers of water pressure, enough to crush a steel submarine a few times over. Also his Grizzly Magnum blasted Caesar through massive steel doors and off the island. I'd say he can compete with and exceed Gai. He didnt create such a massive shockwave but it is partly irrelevant as it didn't do much.
Hody. Not only is he faster/stronger, but being a Fishman he is immune to many of Kisame's specials including his greatest jutsu the moving lake. Too bad though because Kisame is one of the best villains in Naruto and Hody is my second least favorite main antagonist in OP after Foxy.