To deny reversals: why are the lower Courts quick to claim Harmless error, to evidence that unrefutably has the sole power, to either:
a). clear the accused
b). convict the accused +/or
c). under a specific State Statutorial post conviction DNA motion - exonerate the imprisoned ?.

(ei: NYS CPL§ 440.10[1](g-1) or NYS (L.2012 Ch.19 §4) effective Oct 1,2012.
or to put it in another term

Can Harmless error be applied to DNA evidence referred to by the People at multiple phases during trial ?.

Whether a state court's application of the harmless error doctrine to post-conviction DNA evidence violates a criminal defendant's constitutional right to due process and meaningful review of potential exculpatory evidence