Consilium completely ignored the principles set out in Sacrosanctum Concilium. 
I think it was Cardinal Heenan who said that most of the bishops who voted for Sacrosanctum Concilium hadn't the remotest idea that a liturgy like the Novus Ordo would emerge from it.
I agree that Paul VI had the same authority as St Pius V but that does not preclude him from having made one of the greatest mistakes a pope has ever made. The moment his 'new Mass' was introduced, the mass exodus of Catholics from the pews commenced. In changing the time-honoured lex orandi he also changed the lex credendi. Catholics no longer pray as they used to as a consequence they no longer believe what they used to. You only have to read those who contribute to NCReporter and those who comment here to witness their hatred of the pre-Conciliar Church to see the truth of this.