If crota stops them from healing they will definitely win. Vegeta and Goku are pure sayain, a warrior race who actually get stronger the more damage they take. For instance the first ascension to super sayain by goku happened well into a pummeling by Frieza. Gohan ascended even higher and defeated cell, who had just fully regenerated and was at full power, with a one hand kamehaha wave after defending Vegeta. You stop them from healing they get stronger. An entire army of Cabal may be able to destroy a planet, one super Kamehameha from either Goku or Vegeta destroys a planet.