In fairness mate, Vatuvei plays a similar style of football to Wendell Sailor on the wing - straight ahead, does a load of work, tough to stop close to the line - and I really, really, really doubt you'd label him clumsy. His handling is much improved over the past couple of years. There's a lot of other players in the NRL with higher error rates than Manu and his workrate is pretty high for an outside back.
As your own team showed throughout the 90s badav, you can have multiple types of wingers. You can have your aggro dynamos like Hancock, your slick finishers like Carne, the power and passion of Sailor and Tuqiri, it's all irrelevant its how you use the ball to give them opportunities. I think the Warriors rely too much on Manu's go forward. I think the Warriors attack is stifled and seriously depleted, it creates nothing on the inside and asks the outside backs on very limited occasions to thrust through the line and create something out of nothing. Vatuvei, like Kemp, would be a star at a team like Brisbane. They'd usually be good at a team like the Warriors, but this they've played very restricted and inhibited go forward football with little flair and it has largely made it a 6 man game + the halfback, which would be ok maybe if your halfback was a Soward or someone similar who had express pace off the mark himself to break the line and create broken field opportunities.
Kemp will bounce back. The question for me is whether it will be at the Warriors, and the only reason it can't be is if they stubbornly keep to the overly structured regimented game plan, or at another club. Anyone who can't see we have massive problems with our attack that extend far beyond the winger when we average 14 points per game is kidding themselves. Its a miracle we're as high in the table as we are.