Mario is mainstream, as much as CoD, Uncharted wants to be mainstrem but it cant..lol
Zelda and Metroid are more hardcore-ish than anything on the HD twins...imo

He seemed to have little problem defining casual when talking to IGN:

IGN: One of the things that you mentioned last year, and then has been a focus of this year's press conference as well, is getting the hardcore audience back. Wii was such a hit with casual players, but maybe not as much with the core gamer. Can you talk a little bit about how you're planning on doing that? Particularly, how you plan to balance the relationship between keeping those casual gamers and finding the core gamer.

Fils-Aime: The first thing I would tell you is that it's all about the game. Meaning, to excite the more active player, we need Assassin's Creed, we need Batman, we need Mass Effect. And so making sure that we have strong third-party support on those genres, it's critically important.

Beyond that, we also know that there needs to be all of that great online functionality, which we're going to have. And so... That's our thrust for the hardest of the core. For the more casual consumer, what we need to have are great pick-up-and-play experiences, experiences that could be in a party-type atmosphere, all of the things that we've learned, candidly, with the launch of Wii. And so we'll also have all of those great games. Everything from Sing to Just Dance 4 to Wii Fit U, to also games like Lego City. And that's why we're publishing that game, even though it's being developed by TT.

For us, we need to have that broad spectrum of gaming experiences, and if we do that, we'll attract everybody. They won't label themselves core versus casual. What they'll say is, boy, I want to play that game. We need to make sure we have that game for them to play.

http://uk.ign.com/articles/2012/06/06/e3-2012-reggie-discusses-launching-wii-u-retro?page=2

Nintendo can do no wrong, it's not their fault they can't get support on their console no....it's a conspiracy becasue 3rd parties hate Nintendo.

I know......it's a crying shame

edit: funny Nintendo fan logic, according to them Sony got more 3rd party support this gen beacuse they're boss as fuck and 3rd parties are just thier bitches with a last place console and negative dollars, and yet the same people think the Vitas future is in trouble

You expect something that has the WiiU's form factor to have the power of a GTX680 (needed for the Samaritan demo at 30pfs 1080p)??
LOL keep wishing. It won't get even close to hitting UE3's limits. Guarenteed. The 680 is almost the same size as the WiiU alone!

"i think the WiiU pushing the UE3 to its limits will be closer to the early UE4 games than the Wii was with Xbox/Ps3..."

did you actually read my post?

I think that will be certainly true for Western 3rd party developers, however I do strongly believe that the WiiU will be a very good platform for mid tier Japanese developers.  Outside of high profile 'AAA' Japanese 3rd party series such as MGS, RE and mainline FF, I don't see Japanese 3rd parties throwing their full weight behind PS4/Nextbox in the same way their Western counterparts enivitably will.  Hell, even the Wii had decent Japanese 3rd party support, getting MH3 exclusive, DQX and timed exclutivity for the likes of Tales of Graces and SW3.  

I do think that if Nintendo do play their cards right, the WiiU could becoming something resembling the PSP this gen.  The 3DS will probably remain the dominant 3rd party platform of choice, but I can see the WiiU getting some significant Japanese support, despite the release of it's competitors.

If you compare the Samaritin demo to the Elemental video, the WiiU will be no way near UE4, and no way near reaching the top end of UE3. Simple. 

Mario I would dare say is more mainstream than COD of Uncharted within their lifetime. More people know of the name Mario than COD and Uncharted has it far worse than those two even though its concept is highly marketable for a mass crowd when played on easy. The learning curve on a Mario game is nowhere near COD or Uncharted level, plus COD splits its sales annually between three consoles which makes it that much more accessible. Zelda and Metroid being more Hardcore than anything on the HD twins?...no, more creatively and intuitively designed yes. They are on par with the moderate level games on HD consoles. I am sure the core gamer on any console would see Zelda and Metroid as a must have, but Mario can be used to bring non-gamers into the gaming frey which is a large reason non-gaming women and children love it so much and gave them a platform to join. Today children are making the jump from Mario, up to COD and then facing the harsher games the industry has to offer (because their parent obviously dont give a shit about ESRB ratings). Earlier in the generation someone (I believe on this site) said that Nintendo is a platform which prepares gamers for the level of games which exist on the consoles outside of it. I can definitely attest to this because it happened with me. Not to say Microsoft doesn't have games with difficult games, because they do, but they are lower than its competition in numbers with all the first, second and third party added up.

Exploration, hidden secrets, puzzles, boss battles, action, collecting items, inventory, storytelling, personality, artstyle, humorous characters, evil bad guys, sometimes creepy, sometimes charming...

As Sony has become a more western oriented company I can see your point. I am thinking that the Wii U will become the console of Japan. Being that Nintendo has nothing to show at TGS I have a bad feeling about their start up plan though. I think Mistwalker will definitely want to make a game for Nintendo and SE will continue to make Final Fantasy Tactics on it. We must also factor in that most Japanese developers will not be able to afford the high cost of development for next gen and the Wii U will support a less powerful platform which will allow them to profit and build, but the initial sales of the Wii U will spell out whether the Japanese are even interest in developing for it. The sales in the west, let alone America is staggering and I know the Japanese want some of that. 2-3 years after the Wii U they will probably try out the PS4/720. The PS4 and 720 will definitely have the bulk of western support outside of Ubisoft. For the most part I agree. The Japanese companies making JRPG's solely for the Wii could tempt me to buy one for sure. I doubt that the PS3 wont get a good amount next gen. I predict that a lot of games will be made by the Japanese for the HD consoles if they get a good enough publisher to back them like Namco Bandai and produce a potent engine that can exist in the same breath as the UE4, Frostbite and Square Enixes new engine.