These coating categories have different product-specific requirements and limitations. Selection should account for the existing roof, exposure, drainage, preparation, and intended use. A generic material comparison is not enough to specify work.
What to do next
Ask for the actual products and application instructions. Compare required preparation, repairs, and maintenance rather than the coating name alone. Keep any warranty statements tied to the selected system and its conditions, not a general claim about all coatings.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.