I don't know, I'm not a guy, but you may be right, with two considerations.
First, a woman approaches it from a different angle. She (speaking for myself) tends to be more focused on the preliminaries and the aftermath. While actually doing it, all I'm thinking about is 'doing it' May be shocking, but I'm not really thinking about anything other than the here and now.
Second, we (again, speaking for myself) tend not to vocalize our fantasies. Again, to reasons.
First, if we say were're interested in something, our husband will be either turned on or upset. Consider your wife's reaction if you told her you thought that sweet young thing in the supermarket was hot! You'd probably be clobbered!
Second, they are fantasies! Just because something turns me on, doesn't mean I have to share that with my husband; he may think I'm weird or try and make it a reality. It's a fantasy - just because I'm turned on by being taken by a Pirate in the 1700s, doesn't mean we should buy a boat!
That being said, I would agree, most women have 'generally' the same fantasies as men, but they just look at them differently