Quoted from unigroove:At this point it's not about whether or not JPop would want to work with Sterm, although I think he would, but I think it would be the right and most respectful thing to do.
At the end of the day, a lot of things are up to the licensor. They probably looked at both operations and said "Here's a guy who has taken money for 3 games but hasn't made ones....and here's a company that makes thousands of games per year". Jpop has 3 games to finish right now...he doesn't have time to work with Stern!