I'm obviously pretty new here, but as a newer user on the site, if I were a playstation player I probably would've continued to shop around because of the lack of PS support (especially for BF). The addition of these guys would obviously fix that issue, and, having been part of several large scale mergers between online communities, the most important factor in a successful merger is that the two sides share the same goals and vision for their communities, and, of course, the willingness of the absorbed community to adapt to any necessary changes so that the absorber doesn't compromise their own values.
If they're willing to do that, like it surely seems, I can't really see how this is a bad idea.