You need to see the city names to put some context around the stats.
For example: you're looking at a FA pitcher. You check out his ratings, then you check out his previous season's stats. His stats are average at best when compared to his ratings, and his profile appears to indicate that he's spent his entire major league career in San Diego (an extreme pitcher's park). Yet, in reality, he's spent his entire major league career in Colorado (an extreme hitter's park).
So in context, his stats may have been pretty good for Colorado. But you wouldn't know it, because from your point of view, he's been just an average pitcher in a pitcher's park.