If I have understood correctly, then most of the procs from enchants work as a set number per minute. That means that the proc will hit x times per minute regardless of the speed of the weapon.
I currently use a 2H weapon and wonder what enchant would work out best (mostly for pvp a lev. 19).
From another forum:
MOST procs work on a PPM (Proc Per Minute) so that no matter the speed of the weapon, they'll all average out to about the same number of procs over a certain period of time (for instance crusader is set at about 2 procs per minute. On a 3.0 weapon, it will proc approximatly one every 10 swings ON AVERAGE, on a 2.0 speed weapon, it will proc once every 15 swings ON AVERAGE). Firey and Lifesteal, on the other hand, work as a percent based proc much like rogue poisons. I believe firey is right aound 25%, and lifesteal is about 20%. So on a 3.0 speed weapon, firey will proc about 5 times in 1 minute, but on a 2.0 speed weapon it will proc 7-8 times.
Crusader
Lifestealing
Strength
Fiery
Superior impact