If what Hugh is offended by is Sharpton's challenging of the sincerety of Romney's belief... then he is right.
If Hugh is offended at the calling of the Mormon diety the REAL God... then he is mistaken.
Mormons sincerely believe that they worship a true god. But they do not worship the Creator God of the Biblical Text. They do not worship the risen son Jesus Christ. I know that they believe that they do - but they do not.
An illegitimate substitute for something is not the original authentic.
No one should be able to question the sincerety of Romney's beliefs - unless Romney himself does not live up to them. EVERYONE has the right to express their opinion on the authenticity of the Diety that is the focus of such. And saying so does NOT make one a bigot...