Same for Sward, Lin and me
I have never had the 'same' sex with any of my partners. It was always different because sex tends to be as different as personality traits. I have never concentrated on size - ah well, once I did, but that guy was just soooo small and inexperienced that it ended with me having some kind of charity sex ... well, never mind getting distracted here.
Size never really mattered, experience, confidence and creativity is all good sex is about for me. Speaking in condom sizes, Sward and Lin are different, I never felt a difference in sensation when being with them on the same day. Don't worry about this stuff, start saving your energy for the arduous relationship work you will have to face in the future
Facts: 30, female, bi, v-type relationship with Sward (husband, straight, mono) and Lin (boyfriend, straight, mono), poly-fi and co-primary.