That's an odd thing to infer from this. In order to do Rotscale faster, you need a dedicated smiter. The Rotscale duo can be done at very late 2, but there's very little they can do with their extra minute. If everything goes perfectly for the VoS and he's allowed a stone, he can be a minute faster.
That still leaves a couple of oakhearts for the Rotscale duo to kill. It would take them half a minute to run to just the first one, and then they somehow have to kill monks with garbage damage skills and no stone. That seems unfeasible. I've never done the Rotscale duo though - perhaps there's a way for them to kill him faster and be able to kill those oaks within 3. @Has any ideas?