True, but the Icenii also came as near as anyone to wiping out a Roman Colony and destroying a Roman army.
Colony, yes. Roman Army? Not a chance in hell. Aside from her successful ambush of a portion of the IXth 'Hispania', Bouddica's mob's only chance against the Roman Army marching agasinst them from the other end of the country [Mona], was guerrilla warfare. She eschewed that in favor of a setpiece battle with the odds on the ground at least ten to one in her favor. Result? Romans :60 to 400 casualties. Home team: 80,000 dead.