I only grow a few strains, but the list includes:
Swazi Skunk, Potent Purple, Diesel, Inca Spirit, C-99 x Sweet Tooth, Northern Lights, Mexican Sativa, ShishkaBerry, and an indica dom. from Reeferman, (tiz a long story) I call PokerFace. Plus, a shitload of hybrids I've developed from selective crossing.

Would give it some time, as some strains are late-bloomers, so to speak.

I wouldn't take much stock in someone elses' plants looking more awesome...some growers are known to exaggerate their success, especially with time in flower. (could have been a plant at 10 weeks, instead of the 8 weeks they claimed) A common marketing ploy.

Different growing styles, lighting and nutes, can also give slightly different results.

Some backyard breeders don't back-cross (stabilize) their genetics, so parental variations may express themselves.