Everyone is turned on by different things. Sometimes when masturbating, you are thinking about weird things, or fantasies that would never really happen, and it is easier to have better or multiple orgasms. When you're doing the real thing, it's not that it's not as good, it's just sometimes more in this world. Most people can't have multiple orgasms at all. I know I can't. As long as you guys enjoy your sex, and spice of your sex life with new and exciting things, don't worry. Enjoy what you have.