This one appears to be confirmed by Dave Haynie (DiskSalv, A3000, etc). The 2200 was the cheapest model in a development of a computer called the "A1000Jr", a mid-range big-box machine. If we stick all of the information together:
- The 2200 is developed as an offshoot of the 1000Jr;
- It is scrapped;
- Technology invented during its development is incorporated into the 4000.
I'd guess that Computer Answers signed up as a distributor while the 2200 was in development (they went bust before Commodore pulled the plug).
I'd also wager that the guy on the original page was either making his story up or had managed to get hold of a prototype.