"…...You think an upper B-rank will come." The moment Hamon uttered those words an eery silence filled the room and cold sweat started to accumulate down everyone's necks.
Upper B-rank monsters were something none of them could contend against, even Hamon would only be able to at best survive for a time. Everyone else would be swatted like flies given the difference in strength. Just like how Frost and the other Majors could easily cull scores of C-rank monsters an upper B-rank monster could do the same to them.
Individually monsters are always stronger than sapients of the same rank and unless one was a very rare talent and or equipped with armour, weaponry and skills beyond their means they would lose 10 times out of 10. A monster's rank was equivalent to a party of sapients and only by working together would they be able to go against the monster's superior physical traits, size, mana pool and tenacity.