The prem is better than la liga.
Lets take last seasons tables.
1. Barcelona and Chelsea - Barcelona better: 1-0 La Liga Based on everything
2. Man United and Real Madrid - United better: 1-1 Based on Champions league performance and how far they pushed winners of there leagues.
3. Arsenal and Valencia - Arsenal better: 2-1 Prem Based on squads
4. Tottenham and Sevilla - Tottenham better: 3-1 EPL Based on squads
5. Man City and Mallorca - Man City better: 4-1 EPL Based on squads
6. Villa and Getafe - Villa better: 5-1 EPL Based on performance
7. Liverpool and Villareal: LFC better 6-1 EPL Based on world class players
8. Everton and Athletico Bilbao: Everton better: 7-1 EPL
9. Birmingham and Athletico Madrid: AT Madrid better: 7-2 EPL
10. Blackburn and Deportivo La Corunia: Blackburn better: 8-2 EPL Based on points
11. Stoke and Espanyol: Espanyol better - 8-3 EPL
12. Fulham and Osasuna - Fulham better: 9-3 EPL Based on Europe
13. Sunderland and Almeria - Sunderland better: 10-3 EPL
14. Bolton and Zaragoza - Bolton better: 11-3 EPL
15. Wolves and Sporting Gion - Wolves better: 12-3 EPL
16. Wigan and Racing Santander - Wigan better: 13-3 EPL Based on best 11
17. West Ham and Malaga - West Ham better: 14-3 EPL
18. Burnley and Valladolid - Valladolid better: 15-3 EPL
19. Hull and Tenerife - Tenerife better: 15-4 EPL
20. Portsmouth and Xerez - Pompey better: 16-4 EPL
Ok La Liga may boast Messi, Ronaldo, Xavi and Iniesta.
But we boast:
Gerrard
Torres
Reina
Cech
Terry
Cole
Essien
Lampard
Drogba
Vidic
Ferdinand
Rooney
Nani
Fabregas
Van Persie
Nasri
Bale
Modric
Van Der Vaart
Lennon
Hart
Tevez
Milner
A Johnson
Silva
Young
Arteta
Cahill
Gyan
Wilshere
Stuff the stats the Prem is by far the best, most competetive league in the world
PS: When comparing some i did not show my reasoning as i thought it to be obvious due to the general state of the club