Rushed Video Game Platform Launches

[The_Liquid_Laser]

OP gets these right
Atari 5200
Atari Jaguar
Sega Saturn
Nintendo DS
Nintendo 3DS
Nintendo Wii U

OP gets these wrong
Nintendo Game Boy Advance
Nintendo had been waiting for a long time to release this system.  It wasn't ready yet when the Gameboy Color was released (and potentially too powerful), so the Gameboy Color was released as a stopgap.

Xbox 360
This was really the system that Microsoft had been planning to release from the beginning.  The XBox was the trial run and the 360 was the real thing.  The RROD was more a result of inexperience with hardware than it was because of excessive rushing.

Nintendo Switch
This system has one of the best 12 months of first party releases for any Nintendo system.  It might even be argued it has had the best first 12 months of any system.  Nintendo planned the launch year out very carefully.  No way was this a rush job.

OP leaves these out
SNES
The Super Famicom was definitely a successful system, but it was also rushed, at least in Japan.  NEC and Sega had already released their next gen systems and Nintendo had to play catch up to get out their 16bit system.  Super Mario World definitely felt rushed even though it was still a good game.  I mean in Mario 3 the big new powerup is a Racoon Tail where you fly, while in Super Mario World the big new power up was...a cape...where you fly.  Wait isn't that the same thing?  Yeah, definitely a rush job.

Gameboy Color 
Nintedo's plan for a successor to the Gameboy was the Virtual Boy.  The VB flopped.  Nintendo was vulnerable and it was too soon for the GBA.  The Gameboy Color was a rushed stopgap until the GBA was ready.

XBox
This was released late and canceled early.  Basically a trial run for the 360.  They just needed to rush something out there to get some experience, before they were ready to pull out the big guns for the 360.