Not really. Keep in mind that flare does not simply reduce overall contrast. It reduces contrast primarily in the shadow values.
Originally Posted by puketronic
Lens flare varies from lens to lens depending on various factors including the optical formula/number of elements, coatings, the mechanical design of the lens (baffling etc), and shooting aperture. Of course, the lighting in the scene to be photographed has a major impact.
In general, the biggest differences would be observed between an uncoated lens with many elements/groups and a coated lens with a simpler optical design. The difference between say an otherwise similar single coated and multi-coated lens would be much smaller.