I don't know why anyone would think Resident Evil was anyone other than Capcom, but I guess to someone unfamiliar to games, it is kind of a step away from the Mega Man and Street Fighter games.
Dead Rising and Lost Planet I have to keep reminding myself that they're by Capcom. They certainly don't look like Capcom games. But what does it mean to "look" like a Capcom game? I guess that's what happens when you play lots of colourful NES-era Mega Man games and Capcom-developed Disney platformers, and even their Super NES-era fighting games were colourful but not ever trying to be realistic.
By the way, what makes Konami "mature"? Sure, they have Silent Hill and Metal Gear Solid, but how come no one ever makes a big deal about Konami's Yu-Gi-Oh!, Disney Sports games, Goemon, etc.? Yu-Gi-Oh! in particular is really big, but the Konami name seems separate from it. CastleVania is kind of like Capcom's Street Fighter...not exactly for kids, but some of the games are fairly colourful and often not as bloody as you might think.
(When I got serious about gaming in the NES era, Capcom and Konami were the first two third-party developers I recognized. They were distinct, and yet looking back on it like I just did there they are kind of similar. They both are Japanese (if that means anything) and have been around for about as long (or at least I think so). They have many franchises across a few genres, some long-running and very recognizeable. They both have "mature games" as well as Saturday morning cartoon fare (literally, in the form of MMBN and Yu-Gi-Oh!).)
I guess this topic is about Capcom, though. However, I hope their belief that "Nintendo is for kids" isn't as prevalent in other companies. The Wii will probably get some Yu-Gi-Oh! games, but it will get games like Manhunt 2 if developers will simply do it. Chicken/egg, as was already mentioned.