Difference is smaller in reality. I didn't think my bf was 6'0" [sorry love if you're reading this], but looking back at our pictures together, he's clearly 6 inches taller than me. But IRL, I would have guessed he was only 5'10"? From my memory.
& yeah... I'm 5'5"/5'6" as a Taiwanese girl. I always tell this story... my dad banned milk and dairy products as soon as I hit high school in the fear I would grow "too tall" for a nice Taiwanese man [I was my height in middle school]. He used to lament to my mom that all the guys in our church were so short, and he was worried about my chances of landing a dude if I were too tall.