When editing surfaces in Creo's Style tool, one can have a ghost surface and/or reference geometry. The ghost image only provides a qualitative reference, and reference surfaces can be used with cross-sections, intersect or drop curves, but no options give quantitative information of surface deviation for the entire surface, ideally displayed as a color map on the editable surface similar to curvature analysis display.
Right now, the closest I can get to this functionality involves using arrays of point references, which is less than ideal. Surfaces are often exported to software with this comparison functionality, and iteratively corrected in Creo until the desired tolerances and quality are met. This is an enormous drain on time for accurate surfacing workflows.