There are 7 Samoans from the team you mention on your link:
1. John Afoa
2. Neemia Tialata
3. Maa Nonu
4. Jerome Kaino
5. Mills Muliaina
6. Liam Messam (Maori/Samoan)
7. Rodney So'oialo
1. Sitiveni Sivivatu (Fijiian)
Numbers not exact sorry but if you watch many of the All Blacks and Kiwis internationals you would know what I mean as most of the time, usually half, if not, most of the team that strips for matches are Samoans as the per the following team from 2006:
1. Tony Woodcock
2. Keven Mealamu (Samoan)
3. Neemia Tialata (Samoan)
4. Ali Williams
5. Brad Thorne
6. Jerry Collins (Samoan)
7. Richie McCaw (Best player in the world)
8. Rodney So'oialo (Samoan)
9. Jimmy Cowan
10. Daniel Carter
11. Siveni Sivivatu
12. Conrad Smith
13. Tana Umaga, Captain (Samoan)
14. Maa Nonu (Samoan)
15. Mills Muliana (Samoan)
16. Andrew Hore
17. Jerome Kaino (Samoan)
18. John Afoa (Samoan)
19. Jason Eaton
20. Isaia Toeava (Samoan)