With my dogs, they've always bonded better to the opposite sex. We've had 3 females so far, and every one of them has been a Daddy's girl, even though I do all the training, and we each feed one meal a day. Keefer is my first male, and he's stuck on me like glue. He loves my hubby, and seeks affection from him often, but if I leave the room, he's hot on my heels.
Both our dogs are very affectionate and people oriented, but Dena is slightly more independent in that she's not constantly up your butt like Keef is, but she still likes to stay close. She is calmer and less energetic than he is and will flirt with strangers. He's much drivier. But all dogs are individuals, and I don't know if there's any 'typical' temperament differences between genders.