Agree with greater. I know it looks like there's a little peak on top of the head, but IMHO, the proportions and head shape, not to mention being out on big water like Nipissing, have me leaning greater. I've also heard that the sheen thing should not be used as a reliable field mark...too many other variables like angle of sun, wetness, etc.
Always looking to learn more about this common debate topic though........
Mike