ummm...pressures and hurries are VERY important, but they're LESS important than sacks...
if you get a sack, its a more successful pressure/hurry, in a way a pressure/hurry is .8as good as a sack because
1. no yardage is lost
2. there is definetely not reception, but w/ a pressure or hurry a reception can still happen
saying pressure and hurries are better than sacks is mind boggling from an intelligence perspective
I dont think the argument was hurries are better, but rather that the ranking (1-32) for hurries is more important than the ranking for sacks.
(You could make a similar argument if counting eaches rather than rankings, but would clearly have to have some worth-ratio 1 sack = worth to X hurries [as you suggested]. But that x is so subjective: 1.5, 2, 3? Who knows?)
Clearly 1 sack >> 1 hurry. But the question is: was your Defense better if you had twice as many hurries, but less sacks. For example, 16 hurries and 2 sacks OR 8 hurries and 4 sacks?
Assume a 60% completion qb, 10yd pass avg: when hurried-40% and not hurried 75%
1. 16 x .4 x 10 - 2 x 8 = 64 - 16 = 48 yds
2. 8 x .4 x 10 - 4 x 8 + 8 x .75 x 10 = 32 - 32 + 60 = 60 yds
So my made up defense-qb combo given less offensive output with more hurries than sacks.
Also, although you are right that some hurries can still be positive plays, the opposite is also true: a hurry can be an even more negative-disasterous play (for Off) than a sack. maybe a hurry leads to an int, or even a pick-6. they can still turn 2d-18 around into a new set of downs, cant if dont have the ball anymore.