I'm not the best to answer breeding q's, but I'll give it a go. (might even be helpful, lol.)
Here's a little strain-cross guide. This is done to stabilize desirable genetic traits in the next generation of seeds/plants. Selection of the donor plants (moms and dads) are key to this process, and are choices made from dozens (or hundreds) of seedlings/adolescents.

Better...? IDK... It is nice knowing exactly what phenotype you are to expect from a batch of seeds.

If female parent was an Indica, and the male was a Sativa...seeds likely will have at least 3 main expressions of the crossing.
One portion of the seeds will mostly take after the male, and grow like him, one portion of the seeds will be more short-n-squat, like mom...the rest will have various traits from both parents. Traits like more trichomes, skinny leaves but still squat, pithy stems, heavier stone, purple coloring...stuff like that.
The bitch looks to be growing enough of the plants out, to verify which traits you want to continue to develop and preserve, and then taking them all the way to seed maturity. This process can take loads of time and space.

Stinky...Do you by chance have a better chart showing back-crossing, too? It appears to be vaguely shown between the F2 and F3 germination, but not too sure.

Below is an example of a crossing: