With Crusader strike being at 110% at normal, the extra 5% from gloves, the extra 15% from Sanctity of Battle, another 3 % from Crusade, AND another 10% from Art of war. it all adds up to a good amount to 143% which is amazing( i get very high crits with it now).
When the change comes to 4 seconds and 75% wep damage well see how much dps increase this actually is. Now with a 75% base line wep damage add the talents together. and u get just above 100% weapon damage. So basically you swing twice as fast since a 4 second cool down is somewhat close to ur regualr weapon speed.
In conclusion stacking that Percentage really adds up damage so teh glvoes are really worth it.