Dancing rune weapon open discussion

https://youtu.be/1e1cL65J87Q?t=163

Cataclysm, patch 4.3.4 in video the guy used rune weapon many times, you can see his attack power on the ui.


https://www.warcraftmovies.com/movie...Xca5A6mh0my-7Q

Wotlk retail video, you can see the damage difference. The autoaottacks seems really powerful (but well faerie fire+ sunder armor+ debuffs+ maybe a shattering throw) but the strikes seems to have no scale while cata rune weapon seems to scale with everything. I didn't play warmane for a while how is dancing rune weapon working here? I would appreciate any comments below :)