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I the examples Kristina offered. It's really important to understand that integrating competitor product information into your site needs to be done artfully as much as scientifically. Get the message wrong, and you expose the company to DMCA takedown vulnerability, as well as potential lawsuits for business-damaging misinformation, or worse, having governmental agencies come after you. In other words, there are several "right" ways to go about it, and several "wrong" ways. Please be sure a professional is involved in this process, whatever the "method" or "style" of your approach might be - someone who understands the legal issues involved enough to avoid those vulnerabilities.