Consoles are built around entertainment only, and the ways a user can interact or otherwise bend the machine to their will is limited, unlike say a personal computer or a workstation. Plus the people who build the hardware provide SDK's to game vendors.
Talking about bugs, I just curious to either console or flash games, yeah almost of them for flash...
When I play NES, Sega, PSX, PS2, PSP, XBOX, etc...
I never find something strange (bugs) in their games.
How they made something bugless?
And I think there is no big difference between games and application, they are all the same, programmed.