Quote from tradingjournals:
The seller of a bear call spread is sure to get either lower volty or the direction right, because when market goes up volty goes down, and vice versa. It is the reason why bear call spread are "easier" than bull put spreads in general. In commodities, I would expect the reverse to be true, because panic should take place for short sellers when a commodity rises (similar to longs in stocks).
Fallacy of the bear call vertical. There is not 100% correlation between direction and vol. Amplitude is also not at all congruent.
Example: You sell a bear call spread 80-points OTM. In one day, SPX rises 40-points. Vol drops from 18 to 16. Over the next two days, SPX gives up 15 points. Vols are back close to 18 again but the underlying is 25 points closer to you spread.
In the real world I actually just gave you a tame example. The crux of the issue is that you're selling vol @ low vol. There is a natural floor on vol @ about 12. Under special circumstances, like the recent euphoric bull market, you'll get just below 11. But during normal market conditions, vol will bottom out at about 12-14.
You are right in that the bear call vertical benefits from vol drops on a positive print, but only when vols are >30 is that benefit going to outweigh the delta loss.
