No chance.

360 can't outsell PS3... now PS4 have all the advantages that PS3 didn't have.

+ PS4 will be launched early this time
+ PS4 is cheaper
+ PS4 is easy do develop
+ PS4 have brand name

So... no.

"The only way a Pokemon will sell the Wii U in a meaningful way, will be if Nintendo finally push out a proper Pokemon game for the console "

If that was announced at e3 I might be eyeing a Wii U right now rather than waiting for the PS4

Google searches or not, Xbox is still a weaker brand than Playstation. We've seen that in the current gen, with the sales rate for the 360 being much lower than that of the PS3. The XO isn't really positioned to improve market share, either, as it won't likely be very popular in emerging markets, a segment where Sony has done well.

As for the "most powerful console never wins" mantra, that's kind of meaningless. No one is looking at options and going, "hm, this one is more powerful, I think I'll pass." Other factors, such as price, are much more significant. Besides, with a sample size of only a few generations, drawing a conclusion from that is kind of a reach.

I think the XO will finish a close second or a close third. I also think Microsoft is potentially fine with that, as they're far more interested in "winning" North America than in the rest of the world. They want to integrate the XO into high-tech homes, where it can pull an Apple and coattail in other Microsoft products and services. They're looking squarely at households with disposable income, not at people scraping up change to buy a new game. I don't even mean this as an insult but Microsoft is not about gamers, they're about people who are willing and able to spend money on technology and entertainment.

They lost by 7 million to PS3 in Europe last go around despite being less expensive and earlier.  They will be 100 Euros more this time in a recession economy.  I will be amazed if Microsoft mange to cut into that 7 million, much less completely erase it.

I do not see any console doing a Wii in 8th generation, especially the most expensive one.

Exclusives don't get much bigger than Halo, and it doesn't seem terribly realistic to expect MS to ever top themselves there. I suppose they could really start to diversify their offerings beyond shooters and casual shovelware and make something for everyone, but that would be a departure from their track record, so we shouldn't expect it.

As for the Wii U, I'm not saying it won't end up selling well. Just that Gamecube had the same strengths, and it still got clobbered. And not only by the PS2. The (pretty awful, IMO) Xbox outsold it.

question for the OP:

People throw around the idea that the most powerful console never wins quite a bit, I'd be curious to know if the most expensive console has ever won.

I believe consoles tied for most expensive have won but never the absolutely most expensive one.  

@cold-flipper
http://www.ibtimes.com/ps4-playstation-4-already-more-popular-xbox-one-1284883
"ps4", as of may 30 is getting 2.5m hits per month compared to combine "xbox one" and "xbox 720" of 1.7m. That doesn't include the search term "playstation 4" either.
Xbox One is gettin 200k per month and xbox 720 is getting 1.5m. That doesn't actually support your point. Most of the people don't even know its name.

Prediction Xbox One lost the generation before it even began.

PS4= 125 Milliion

Xbox One= 60 Million

Wii U= 40 Million 

They will definitely win the NA and UK even if some are dreaming Sony is going to beat Microsoft in America.
I also think they will win over the WiiU... But to be the top console worldwide, while they have chances too, I would not a call it a win already but their offering is definitely better than Sony and they are also going to gain access a large market (and this is what matters in a long term plan...).