how many non-tech people would even assume that the search engine could produce this type of comparative results without learning about it first? in that process of learning, you learn how it works, and learn that /=division, vs=comparison

i imagine if it turns out to be a common problem, they'll probably give you a little reminder message about it. "if you're looking for data comparison, use vs. instead of /"

That little learning for technically literate (small percentage of users) could be a show stopper for the rest. Many people are scared of even the simple maths (sad but true).

Isn't it silly to judge a huge system by a single query which happened to to one logical thing instead of another?