Like 25-30% damage kind of dinky. A buff is a buff, but that would suck. [spoiler]nobody would be brave enough to take this bet[/spoiler]
The damage buff is a bit of a dumb move in all honesty, if they wanted to make the super more relevant and well give more impact in a sense they should of just increased the range. The range of the impact, the range of where you fly over or through something it dies and the range of the start up thunder crash.