That's irrelevant. It's completely a red herring. If someone thinks that games are overpriced, how does it change anything that candy bars have increased at a faster rate? Or that college costs have increased at a faster rate than either? You might FEEL better about it, but that obscures the fact that it doesn't change a thing about the original assertion. Just because they've had a merely slower rate of increase (or even no increase) doesn't prove anything. So what if the VCS and Wii cost the same amount? Maybe they're both overpriced.
Now, with that said, I can't be certain they are overpriced. There's a magic intersection between profit margin and sales which maximizes the benefit on both sides, but I don't know what that point is.