I comprise a high-quality position domain

There is a high-quality position domain that I comprise. The matter at this time is that exclusive of forward, both www.domain.com and domain.com show the way ultimately to the similar site. There is a original website I am creating and the ‘www’ sub-domain is a little I don’t wish for in it.Could it be probable that the sub-domain have an crash on the rankings of the area? Does any person have some suggestions or some recommendation to present? Could it be probable that on observing that the place is the similar, the search engines pay no attention to the sub-domain?