Okay here's the thing, the 1 exaton calc for CSRC only accounts for the Oceans, and assuming vaporization goes one mile down in stone would make it 6 Exatons, still a lowall.
Saitama was suprised by MB Boros' speed. He called Boros strong many times, even in his released form, and called Orochi a child, and most likely the monster prince, not even worthy of the title. Never called Boros is unworthy of his title of Dominator of the Universe.
Also, Murata said Gery, Melz, and Gror together would have almost no chance of beating Orochi. (This is accepted and on the profiles), This means they still could defeat him. Not only warrants an upgrade for those three, but also throws a wrench in Orochi being = or > Boros. Gery is shocked by the ship being damaged, and breaks only a very small part of it himself. Boros even in his released form, did far more damage to the same ship.
Also, a much larger Orochi was blown to bits from a normal punch, meanwhile, Boros was able to take multiple, and even take one in his armored state.
Saitama only gets bored with Boros talking, not his fight.