No one will explain it better than the lawsuit itself. Read it again. Stare at the tables. Maybe even Google some explanations on trading. Hope this helps. Not sure how one can label it a distraction without understanding the basics.
Onco: I have exactly the same question. Perhaps one of our posters with m owl edge of the order entry, prioritization and close mechanics could explain how low offers are not immediately executed. OTOH if this is shown as lawsuit alleges occurred, pretty strong evidence of collusion (no MM bought on artificially low offers) or manipulation of the trading by ?? programming or algos? It shouldn’t happen.