Having spoken to a lot of men about what attracts them and turns them off about women(growing up as a guy you naturally talk about this stuff), my experience is vastly different to yours. Most guys WANT an intelligent woman with the emphasis being on grounded common sense rather than academic achievement. The only guys I saw as threatened by intelligent women are also threatened by intelligent men.
Most men are threatened by intelligent women, weak or strong. Whether they admit it or not depends mainly upon how honest they are with themselves.