First, sacks can lead to drastic field change.
Second, you had to add the "without being stripped" caveat, which isn't a valid caveat to a sack. Take Brady, for example. While there are probably a few non-sack related fumbles to his career numbers, he has been sacked 468 times and fumbled 118 times. That means that, without adjusting for non-sack fumbles (You're welcome to dive into the numbers for that), Brady puts the ball on the ground about once every 4 times he's sacked. The fumble is a result of the sack, after all, so leaving it out as an option isn't really any more sensible than only counting interceptions where the ball is then fumbled and given back to the offense.
Historically, he sure as hell isn't throwing a pick, or a near pick, once every 4 times he's under pressure. And your comment was[/quote=Deus Irae]
I'll take your word for it. But honestly that is kinda surprising to me. I just doesn't seem that Brady fumbles anywhere near 1 in 4 sacks. But won't argue with the numbers cause I'm to lazy to look them up.
Generically speaking (though the whole point of my posts in this thread is that we can't just look at this generically, as you and others are doing), a sack is much more dangerous to an offense than a pressure, on a time-for-time basis. Where pressures gain is when the number of pressures are high and that starts to impact the play of the QB, and sack totals remain low (because high sack totals would also be likely to impact the play of the QB, among its other impacts). So, yeah, you want to have 10+ pressures instead of one sack. But you want 10 sacks instead of 10 pressures.
Lastly, with a sack nothing bad can happen to the defense (I'm not looking at bizarre exceptions here), absent a second action (i.e. penalty). With a pressure, the QB can still complete a pass for positive gain of minor or major impact.
I don't necessarily disagree with you, I think we are looking at the same thing from two different directions emphasizing one outcome over the other. And I don't disagree with the bolded statement. I just think one is more realistic, is easier to make happen therefore will happen more frequently therefore having a bigger impact overall.