well i' ve seen this in teamxbox and thought it' s a good thread, though they only discuss about microsoft, so what is the worst that can happen to all three players, i' ll start:

Microsoft:

Halo 3 single player is very underwhelming.

too human is crap again

No newer impressive IP shown by microsoft this e3 (about the same what happened to sony last e3)

Sony steals the show with a god of war 3 trailer or Killzone 2 ingame footage equaling the same or almost quality of the infamous e3 2005 trailer.

lost odyssey very underwhelming

No major Jap games announced.

Red ring of death on demos stands


Sony:

Killzone 2 is not close to the trailer.
Metal gear or zone of the ender announced to 360
lost odyssey is as impressive as final fantasy 13
final fantasy 13 is not impressive
no newer impressive Ip announced to e3
Ken kutaragui opens anyway anyhow his mouth.
kez hurai is the newer kutaragui
more exclusives slip


Nintendo:

still not many games announced to the " serious" gamers
not a single game is attractive graphicaly
most games controls feel gimmicky

the best thing about wii , it can only get better... seriously