Uh, what? Who are you to say what's relevant and irrelevant? The point is MS can come to Marvel with a big stack of cash, and a handful of contentions that sweeten the deal. Microsoft can pitch an exclusive from many angles, on many different basis. They're not some small-time b-grade publisher, no matter what some here might think. If MS comes out with an offer big swinging dick and all,
And Sony probably are the best in the industry for it. Though that doesn't preclude Microsoft from approaching Marvel and going 'Hey Marvel, we have a big bag of cash, an incredible team in-mind, and a desire to make a critically-acclaimed AAAA Marvel exclusive'
Spiderman is an incredible achievement, but come on. It's hardly something that other pubs couldn't replicate. Sony hired a talented team who were a great fit for the IP, gave them a good budget, generous development time, strong marketing, and provided good tech support. These are conditions that Microsoft (and Nintendo) could fulfill as well. It's hardly rocket science.