I would think that Harada knows by now that pure clockspeed isn't everything and knew about a 3.4 GHz prescott vs. a 3.4 GHz core I7 Ivy Bridge now. So I'm going to take him at his word when he says the clock speed of the CPU is slower and therefore makes it a bit less than the 360 and PS3
Someone mentioned that the Wii U would have a 6770, but last I check, I thought they were getting a GPU based on the 4000 generation of Radeons, not the 6000 generation. I doubt that they would have a stronger GPU than Sony or Microsofts next console, and I seriously doubt they would pair a strong GPU with a Weak CPU, which would cancel out the GPU's strength since it would have to wait for the CPU all the time.
For the ones saying well we aren't truly getting next gen if we are getting 6000 series GPUs or at best one of the low end 7000 series GPUs. This has been mentioned over and over again. Due to not having to deal with Windows, and due to not having to deal with tons of combination of CPU, motherboard, RAM, and GPUs, consoles are able to fully specialize and fully optimize so that their comperable hardware goes a lot further than a PCs comperable hardware. Plus, with the success of the 360 and PS3, PC games have been stunted by the presence of consoles anyways. The days of PC games looking way way way better than console games have been mostly over as they tend to just be higher resolutioned, better textured, and AA applied version of the console game, as oppose to games that are made just for PC and push the envelope. Finally, look at what happened when Crytek pushed the envelope in 2006. Clearly Crysis looked better than anything the consoles would ever do, but it saw somewhat limited sales, and it ran bad. You have some 2011 even some 2012 GPU and CPU top of the line combination that still couldn't run Crysis well with max everything and at 1920 x 1200 or even worse 2560 x 1600. In the end, Crysis was ok, but if they didn't focus so much on graphics and actually gave the game better gameplay and storyline it would have been better.
Finally, as I alluded to in the first paragraph, Nintendo hasn't pushed the envelope since coming late to the game with the N64 and therefore getting their butts kicked in that generation. As a business they are content to making money, even if they don't push the envelope. All iphones that were released, especially the early ones, were significantly weaker than the competition in either RAM, CPU clockspeed, GPU or a combination of such. Despite that, they clearly make the most profit and help propel Apple to being the most valuable company in the world. Though I'm not interested in Nintendo games (to kiddish for me), I see no reason to think they are somehow going to fail. As for graphics, The CPU and GPU is further burdened by the presence of the controller screen, and if you have two, it is going to be even worse. So they'll be HD, or maybe something like 600P upscaled to 720P, but just have lower textures, eliminate AA and tweak the presence or absence of shadows, draw distance and other complex stuff. They'll be ok. the Wii was essentially an XBOX 1, and now the Wii U is essentially going to be and XBOX360. A full generation behind, but still will be successful.