User blog comment:AtheistUntoDeath/Which of these champions would win? Part 8/@comment-5222562-20140623145550

Warwick would win.

As is said in the lore of Urf, Warwick is able to adapt expertly blending even the most innocent of surroundings, he could use the surprise element to attack Volibear and even if Voli uses his powers  of lightning there to many trees to around them, so in 1v1 Warwick with his speed and lifesteal is able to takedown Voli who is unable to use his lightning powers.