Unholy DK snapshotting

Does the unholy dk gargoyle snapshot haste ? BEcause when i tested it for example with pre pot on unholy and blood presence it only snapshotted the attack power but not the haste i both presences i got the exact same hits but on blood got just more dmg all of the dmg was with normal hits not crits exact same hits i got in both presences.Its the same thing also with the army if only took my attack powr but not the haste in blizzard when it was WOTLK CLASSIC it took eveything from u when u snapshot it. I also tried Blood-caked blade talent with dual wield as unholy its not working proprly like off hand is not hitting same demage as main hand, off hamd demage is almost 0 compared to main hand .Both weapons are blood venim blade , exactlly the same. Anyone tested it?
More important thing is the gargoyle strikes , its affect all the unholy dk builds.