Product Mapping Question

Hi David,

I have a question question about product mapping. I'm actually creating a script that updates all of my feeds so that they are product mapped. The question I had was what field does Price Tapestry use to do the product mapping? For example lets say I have two vendors, Zappos and Endless, and they both have the same product. How do I unsure that on the shoe product page that that both of them will show up in the compare prices section. Is it purely based off of Product Name? So that when I product map, I could theoretically alter the names of the Endless product to match the Zappos product in the datafeed so they would ccmpare?

Thanks,
Paul