Forum:Q And A: Malevolent Mech

Ok so last night my buddy was playing a judge with his racoon city deck. He summons Malevolent Mech Without a tribute and he had paladin of the cursed dragon on the field too. Because of malevolent Mech's effect by rulings it says only if it is the only zombie type monster on the field is he destroyed. But! According to the judge Even though there was another zombie type monster on the field, he claimed malevloent mech was still destroyed. Is malevolent mech stilld estroyed even though there's another zombie monster on the field and he just won't take damage or is he destroyed in general?