My guess would be yes. They just have tinier coils than say I do and maybe their hair strands aren't as fine as mine. I think this is where the LOIS more precise definition comes in. When we talk of 4B, we are only referring to the curl size, not the diameter of the strands or texture.
Another thing to consider is, our hair behaves differently when it is dry. When we condition our hair, we don't just coat the outside, but many of us also deep condition so that the hair is moisturized from the inside out. I can personally say that when I started DCing my hair, I discovered a softness I never knew I had.
So my guess would be yes, they are 4B with coarser strands than mine.
Here's a photo of my hair braided when I used Shea Butter instead of S Curl on my hair. I was also using CON and many other products that my fellow naturals used (instead of keeping it simple). I don't know if you can see it in the pic but my hair was hard to part and comb, and was a lot like the girls at the end of my post:
Compare that with my hair after I stopped using too many products and gave up the dry products in favor of water-based moisturizers and focused more on DCing and baggying nightly to keep my hair moisturized rather than layered with dry products. In other words, once I figured out how to keep my hair moisturized, it became so soft and even looks soft and parted more easily:
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Ahhh, I am beginning to understand now. I have parts of my hair that I classify as 4b but it looks nothing like those pictures so I was confused. Their hair looks so tight b/c it is coarse and not moisturized!! Thanks and I might have to try that Scurl cuz your hair is looking luscious!!