brains versus brawn
Mental acuity or intelligence in contrast to great power or physical strength. This isn't a case of brains versus brawn—you need both intelligence and physical strength in a situation like this. A: "OK, if it were brains versus brawn, which guy would you pick?" "B: "Oh, brains, definitely. I find nerdy guys to be very attractive." A: "Wait, the star of the football team got into an Ivy League school?" B: "Yep, it's not a case of brains versus brawn with that guy."
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