> I can't taste the difference between wal-mart tomatoes and whole foods tomatoes
I have a greatly diminished sense of smell and I can still taste differences between different varieties of tomato at a CHEAP grocery store, never mind whole foods.
You're basically trying to say that different species of plant can't be different. That's absurd of course.
Then again, there's no helping a McTomato regardless of where you acquired it.
The problem with Walmart is that they really do know their customer. They spend a lot of effort and technology in understanding what sells at each of their stores. If you are shopping at a Walmart frequented by trailer trash, you are going to only be presented with trailer trash options. Plus their whole reason for being is cheapness, not being good.