那倒不是,存在这样一个推论:(RC 102)
When a creature that has this extraordinary special attack charges, it can still make a full attack even if it charged while restricted to a single action. All its attacks receive the +2 bonus on attack rolls gained from charging. If it uses its attacks to successfully start a grapple, and it has the rake ability, it can also make rake attacks.
重点是第二句,既然该全回合视为冲锋可以拿到+2AB,那么伤害也视为冲锋可以翻倍是合理的……不过我认为这种情况依旧属于需要严打的范畴。