Death Jr. looks like some generic platformer. How many games has it where the little mascot character carries some giant firearm and kills people. I think the only reason Crash was ever popular is because he was in 3D, whereas at the time, Mario and Sonic were stuck in isometric planes with unfamiliar gameplay added (Mario RPG, Sonic 3D Blast etc.) This time, the stakes are different, Death Jr is a 3D platform on a handheld. Suprisingly, the GBA beat the PSP with a 3D Platformer. I forgot the name of one, but I-Ninja GBA (If anybody saw it yet) is a 3D platformer with 2D sprites and polygonal levels (Think of Sonic X-Treme)
Theres some screenshots of it in the latest Nintendo Power, along with a few other Namco games gone GBA.
Also, the public's views on gaming have changed. People like cheap stuff, the GBA is cheap, bu the PSP is far from it, it'll probably go the life of the N Gage...