It's pretty common for people to say their bodyfat is a lot lower than it really is and that will never change, especially those that want to be included in an acceptable level to cycle.....that's why so many say they are 15% or less lol.
But some people really do well on guessing bodyfat. A lot of guys think I'm shredded to the bone at the gym and say I'm ready for the stage all the time. Nope....not even close. I'm a little over 8% or so right now, and that's with ab veins, and tight defined obliques and serratus. Everybody also wears fat a little differently which makes things harder to gauge, but when it all comes down to it the number doesn't even fucking matter. It's what you look like in the mirror, and what other people see. No judge and nobody on the street is going to walk up to you with a scale, calipers or measuring tape.....so that's why I tell people to not get wrapped up in the numbers game. Get that illusion and look you're going for. That's what people see.
As an example, the last 2 weeks I've dropped 4 lbs from a little calorie and carb manipulation and tightening up diet. I had 4 buddies in the last 2 days tell me in the gym how fucking huge I've got in th last couple weeks. I'm like guys, I just started cruising 4 weeks ago, and I've dropped 4 lbs in 2 weeks. Lol
Getting more defined, striated, vascular, and dry gives you that 3D effct and will make you look like an aesthetic beast!