Just release the poll the Bandos Godsword honestly needs a little bit of a buff anyway however I would consider buffing the dragon Warhammer a little bit sometime also. Like maybe double the accuracy of the special or do what the other guy said and make lower defence at least 50 levels if that's greater then 30%.
I believe the Bandos Godsword buff would greatly devalue the Dragon Warhammer due to having the same effects. The BGS is very plentiful in the market while the Dragon Warhammer is super are to have. I feel this would be an unfair update to the people who obtained DWHs through so much hard work, just to be crushed by this single update.
Leaf-bladed battleaxe has been more practical for killing turoths/kurasks. I am less likely to 4-hit a kurask with a leaf-bladed sword, while i am more likely 3-hit a kurask, with a leaf-bladed battleaxe. Yes theoretically Leaf-bladed sword has more dps, but only if vast majority of attacks hit the target hard. But max hits with sword are very low in comparison. With this 17,5% damage boost, you can sometimes even 2-hit a kurask which is unbelieveable. (I am assuming that damage boost stacks with slayer helmet)