I think this is Speed Vs Strength/Durability.
Not sure how fast the Lycan is. He was easily tagging skintighthalfvampchick, who was blitzing several humans in her human state iirc. If Lycan was tagging the human chick, he should have a chance here. If she became a great deal faster in her vamp form and that was what he tagged, then the chances of tagging Russell increases.
/meh