Do what feels best for you buddy. I have never used DLive to upload videos and have always been a supporter of Dtube myself. I As you can see I get a fair amount of decent upvotes from Dtube which I am grateful for. There doesn't seem to be as many gamers on Dtube as Dlive so I think it's a bit easier to get noticed for gaming content. But definitely upload your videos to Dlive and see how it goes, you've got nothing to lose after all :D