I always read things like you can't compare some things because they are "completely different". I was gonna make an example but I found this perfect:
http://answers.yahoo.com/question/index?qid=20071213185033AA44miz
Look at all the responses completely missing the point.
You can definitely compare apples to oranges. Example:
Obviously this applies to everything, not just apples and oranges and I'm talking about when people say you can't compare things. Also, I don't think there such thing as an unfair comparison.
http://answers.yahoo.com/question/index?qid=20071213185033AA44miz
Look at all the responses completely missing the point.
You can definitely compare apples to oranges. Example:

Obviously this applies to everything, not just apples and oranges and I'm talking about when people say you can't compare things. Also, I don't think there such thing as an unfair comparison.