Thanks for reporting on your results.  We can all learn from you without going outside to freeze!  Personally, I've never had a pressurized gas stove.  No reason in particular, just never thought I needed one.  I started out wih a Svea 123R.  Boy, I wish I could figure out what I did with that stove!  Used a Coleman Peak 1 for a while.  Good stove, but heavy.  Now I've got alcohol burners and wood burners.  But I don't get out as much as before, so I've never actually tried the alcohol burner in extreme conditions.  Wood, I image, will always burn in the cold - as long as you keep it dry and shielded from wind.  At least I hope it will!
Thanks for the report.