PvP Cannon's Stats

Well uh, I've stumbled upon something quite confusing about the amount of w.att on the level 130 Cannon. In-game, when looking at the recipe for this cannon on the Smithing page, it shows that it's 122 attack, however the closest records I found on Southperry (from Ascension) show it as 106 attack. At first I figured this was just a visual error as I heard 122 attack is supposed to be the Empress Cannon's attack (which, oddly enough, is shown as 140 attack on the Ascension extractions, AND in-game, and that just can't be right...), but the attack is the ONLY stat that's abnormal on these two weapons, so I'm at a total loss. Is there any way of determining which attack is the real attack? 'Cause I really don't wanna waste my time PvPing for a 106 attack Cannon when I could just get a VL cannon with 117 attack.

Thanks