I've stated it before, Rob learned a lot during the making of the films. You can see the improvements from House to Rejects, and I'm sure he'll get better.
One of the things that people forget is, House was his first film. The majority of film makers don't do too great their first time out. Same holds true here. With Rejects, you can clearly see the improvement in storytelling, and where Rob is starting to learn how to manipulate the audience. He works his homages into the story, rather than making the homages the story.
and Ani touches on the box office gates a lot in his arguments here, but that's really not the only measure of "success" to be considered here.
as I mentioned earlier, Rob's films have opened up a window of opportunity for both himself and for other musicians to make their own film projects. as well as being hugely influential on the current 70's retro trend in the industry. (70's horror came back in vogue after Corpses. It was pretty much dead before that)
I don't see Uwe Boll's films replicating either of those instances.
