WPT Mandalay Bay Question

[VeryMoonFunk]

SO tonight was the final table of the WPT Mandalay Bay. Here was the final 20 and their payouts:
1. Shawn Buchanon $768,775
2. Jared Hamby $459,080
3. David Levi $229,540
4. Thayer Rasmussen $131,170
5. David Haddad $98,375
6. Danny Wong $76,515
7. Barry Greenstein $54,655
8. Juan Carlos Alvarado $43,720
9. Ryan Daut $34,980
10. Chau Giang $26,235
11. Chris Bell $26,235
12. John Juanda $26,235
13. Alexander Kravchenko $21,860
14. John Gordon $21,860
15. Ben Sabrin $21,860
16. Tim Hebert $17,490
17. Chantel McNulty $17,490
18. Gioi Luong $17,490
19. Michael Mizrachi $13,115
20. Lex Veldhuis $13,115

So here's my question. It seemed like 1st place was paid a lot less than the WPT's I've been seeing lately. Was the turnout affected by the starting of the WSOP and Event #1?