The Royals are not light years ahead of any system. They're good, and Moustakas/Hosmer are great, but there's still not the total talent that two Rizzo drafts have given the Nats. Texas, Tampa and Atlanta are all definitely better as well.
Are you saying that you would rather have the Nats system than the Royals system?
The Royals have 5 guys who are top 30 prospects in baseball (Hosmer, Moustakas, Montgomery, Myers, and Lamb). Not to mention Duffy, Melville, Colon, and Dwyer. That is 9 guys who are potential Top 100 guys. How many teams could say that? Tell me what Nats pitching prospects are better than Montgomery, Lamb, Duffy, or Dwyer? You tell me how many Nats prospects will make the top 100? Maybe 4 (Espinosa, Harper, Ramos, Norris).