I was taking that into account, actually. Games like EVE don't need Steam at all, LOTRO was way old when it made its way into the client, and others like RIFT and Planetside had a lot of buzz outside, so their numbers aren't that significant or tell the whole story. But a game like Path of Exile definitely benefited from it, and hasn't left the top 20 since it did. I think that kinda shows it is doing well inside and outside, while with MH it is hard to tell.
Marvel Heroes didn't start that high at launch, but it had a respectable number, that has been shrinking as the months went by. In any case, it is impossible to compare, I admit it is a relative measure if we don't have real outside numbers, but I don't think I'm wrong when I say that there's ways the Steam numbers could grow, and that there are some things they could be doing about that, but aren't.
Maybe the don't care or need to, which is fair enough.