I would personally expect that part of the reason Nintendo would seem far more impressive from people who were actually at TGS would be the quantity of products for Nintendo platforms, another part that people probably haven't considered is what was being shown ...
Consider for a moment what was shown for the PS3 at TGS, the PS3's big games were Final Fantasy 13, Gran Turismo 5, and Metal Gear Solid 4; the exact same games that have been on display (in some form) at E3 2005, TGS 2005, E3 2006, TGS 2006, E3 2007 and TGS 2007. It may never match the quality or sales of a Final Fantasy game but King's Story is far more interesting than any Final Fantasy announcement simply because it is new.
Agreed. The Sony Hype Machine is pushing those three games like there's no tomorrow. Undoubtedly they'll be good, but consider the number of excellent Wii games on display, combined with the fact that Nintendo wasn't even there. If anyone's still doubting that there will be excellent third-party support for the Wii - and dwindling third-party support for the PS3 - then they're likely deluding themselves.
"'Casual games' are something the 'Game Industry' invented to explain away the Wii success instead of actually listening or looking at what Nintendo did. There is no 'casual strategy' from Nintendo. 'Accessible strategy', yes, but ‘casual gamers’ is just the 'Game Industry''s polite way of saying what they feel: 'retarded gamers'."