CONCACAF Club Rankings

This site (CONCACAF Club Rankings) ranks the CONCACAF clubs. I would be interested to see what everyone's thoughts are on how legit the rankings are? It looks like its based on each clubs points in their respective league. Mexican clubs dominate the Top 25, so it seems like it could be right. These are the Top 5 clubs:

1.) Toluca

2.) Tijuana

3.) Cruz Azul

4.) Leon

5.) Morelia

Like I said before, Mexican clubs dominate the rankings, but there are some Costa Rican, MLS, and other leagues sprinkled in there.

What are your thoughts on the rankings?