Still involves rosaries, and Moslems worship those things. Not likely you'll get many regular Protestants to cross that bridge.
Veneration of the image on the tilma doesn't require the recitation of the rosary.
You might want to do some googling on the image and the scientific analysis surrounding its origin. The image is clearly miraculous in origin. Since the image was instrumental in the conversion of the native Americans and their barbaric religious practices, it could not be the work of the devil.