It's not that simple. If I were to close my eyes and think of the various attributes that have attracted me to the men in my life, I would not be able to say it was because they were manly, or for that matter, feminine. Most people who have not been exposed to this community don't immediately think of "gender" when they fall in love, unless they are specifically into people who blatantly cross the gender lines. They just take it for granted (if they are hetero), that the person they fall in love with is the opposite gender.
When I think of all the men that I know, I couldn't tell you which are more manly than others, because to me they all look like men who have different styles, and they certainly are more manly than me. lol Besides, everyone has a different laundry list of the things that attract them and a lot of it has nothing to do with a particularly stereotypical "manly" look, but has everything to do with intellect, his personality, a certain smile, a certain look in his eyes, his sense of humor, the body language he uses with me ... things that are difficult to define.
And most men I encounter on the street do not fit into the "manly-man", stereotypical look. Almost all men under a certain age are in pretty good shape physically, and almost all men past a certain age are not as in shape as when they were younger. Not all men have huge biceps, are over 6' tall, sport the "not shaved in three days" look, etc.
So, I challenge anyone to define a "manly-man", while staying away from the stereotypes: the Marlboro man, the famous sports jocks, GQ models, the "macho" actors, etc. Most men aren't like that, just like most women are not like models or actresses.
Sorry Annabelle, but I read the notion that most women are attracted to "manly" men in this forum a lot, and I just want to say this is yet another fallacy. Most (hetero) women are attracted to men, period. They can be quite ordinary men, they don't have to be particularly "manly". If this makes sense.