Bing wont group the results from same domain in SERPs

As you can see for yourself, Bing wont group the results from same domain in its SERPs. I searched a keyword, Halo addons, it show 2 results from moddb, But they are not grouped.

If you want to ask me whats the big deal, there can be! Suppose, there are 2 results from a same domain. You can give more weight to those results as it is discussing more about the topic you searched for. So there is more probability for you to find the topics you interested in, in those websites. There can be better topics in the other websites too, but you can have the domain name noted in your mind too. Also, if you see one of those results asks you to register, you can skip the second one too if you don't want to register. I guess you would support me when I say there is some advantage for grouping the search engine results.