Again it's just a circular argument which rests on plot shields and weaponry, something Star Trek is no stranger to. A case in point, if the Cardassians in the 24th century were capable of building an automated vessel
impervious to phaser and torpedo fire, then why did they lose to the Klingons or need the Dominion? Hell, once they had the Dominion how did they lose to the then weaker Federation Alliance?
So this is how it is; the Enterprise-E is a hero ship and will eventually defeat the Vengeance because that's what our heroes, and the Enterprise, always does.