[anthony_franco]

Having it as a blog post would increase the domain authority in Google's eyes. But on the other hand, having a blog post dedicated to talking about your main competitor would probably be detrimental in converting more customers.

This is the best compromise. A separate site to discuss the situation. With many links to the main product site to pass through some of the domain authority as well.

[techhacker]

The domain will become irrelevant in a week's time. So where does this SEO story comes into the picture?