Ok, it's just a language problem then.
It will not increase the chance of being parried, only the number of total parries, or the frequency at which you are parried. Again, though, increasing hit chance will not turn into more parries, even for a dual wielder, that is purely a matter of weapon speed. (And boss parry chances has no diminishing returns anywhere in it)
To give you some vaguely accurate numbers for your example:
Typical tanking 1-h = 1.5 sec swing time
Typical slow dps 1-h = 2.5 sec swing time
Typical dps 2-h = 3.5 sec swing time
So, to take a Warrior (1 tanking 1h), a DK tank with 2h, a DK tank with optimal threat weapons for dual wield Frost (2 slow 1hs), and a DK trying to pump survival stats (2 fast tank 1hs):
This would be the rough auto-swing count per min:
Warrior (fast 1h) = 40
DK 'Threat' (slow 1hs) = 48
DK 'Survival' (fast 1hs) = 80
DK 'standard' (2h) = 17
So, we'll compare a few numbers in a stretch:
Then we can complicate that with the considerations of spec and special moves. A prot warrior will use only 1 in 5 GCDs that isn't parriable (Revenge, 6 sec CD). So, on top of auto attacks the warrior will generate 32 additional parriable strikes per minute. DK's on the other hand, will use far more spells that are not parriable, and will reduce their auto-attack swing count by replacing them with unparriable Rune Strikes. We'll make it a Frost DK for simplicity, and say that she isn't using HB unless Rime procs. So with that set-up the DK will have (IT, PS, Pest, BS, OB / OB, OB, OB with FS fillers) roughly 8 parriable GCD's per 20 sec, 24 per min regardless of weapon style. If that DK has about 50% avoidance on an average swinging boss, you can expect about 60% of the melee swings will turn into RS's for the 2-h, and as such will no longer be parriable. The dual wielder will get a smaller % turnover, but a higher count of RS's because of having outgoing swings faster than the incoming swings. It is not unreasonable to expect somewhere in the neighborhood of a 30% turnover rate.Code:#auto-attacks #parries(no Exp) #parries(26 Exp) Warrior = 40 5.6 3.0 DK-2S = 48 6.7 3.6 DK-2F = 80 11.2 6.0 DK-1S = 17 2.4 1.3
So let's adjust the table from above:
So, notice now that while you will get more parriable swings, and more parries with dual wielding than a 2-h as a DK, DK's also start way ahead of the curve for parriable attacks, and in fact, dual wielding tank weapons can only marginally increase your risk of parry-haste over that of a warrior with the same Expertise. And after expertise we're nitpicking on half an actual parry (which is only relevant in a giant number statistical average).Code:#attacks #parries(no Exp) #parries(26 Exp) Warrior = 72 10.1 5.4 DK-2S = 58 8.1 4.4 DK-2F = 80 11.2 6.0 DK-1S = 31 4.3 2.3
What's more, expertise reduces the actual physical count of parries by a much larger absolute value coming from a higher count.
Perspective makes a big difference here, the discussion isn't new, but there is still much missing perspective.