Its 5 actually. Cows play 5 of last years top 8 as well. So do the Roosters. Bulldogs too. Manly also have 5. Eels get 5 and so do the Warriors. Broncos get 5.
Titans play 6 of last years top 4 twice. So do the Knights.
The rest get 4 each. Storm, Tigers, Dragons, Warriors, Raiders & Panthers.
Its hard for every team and will be until they fix the draw to a proper home and away thing.
I cant understand how the NRL makes the draw so complicated, to me this would be fairest way
Example after 2017
1. teams who finish 1-8 play each other twice as do those 9-16. means everyone has played 14 games to start
2. those who finished 1-8, play those 9-16 once, that another 8 games now at 22 games
3. Final 2 games are worked that all teams give list of 8 teams they want to play in order over 5 year running period, this basically ensures you get derby games twice, the premiers would get first cab off rank.
So basically it would have meant in 2018 basic draw
Storm, Roosters, Broncos, Eels, Sharks, Sea Eagles, Panthers, Cowboys play each other twice
Dragons, Raiders, Bulldogs, Rabbitohs, Warriors, Tigers, Titans, Knights play each other twice
For us example thats 24, and we would most probably have elected Dragons and Rabbitohs in our 5 year running period.
So basically finish in top 8, everyone treated same