Mandarin immersion is good, English immersion bad!

The San Francisco Chronicle ran a story about a Kindergarten class that is a Mandarin immersion class that many non Chinese parents want their kids to take. Of course the reason they are using immersion is that it really works. However, when American schools try to teach Hispanic kids English by immersion, it is considered abuse. And so we have the bilingual education advocates demanding that Latino kids be taught in Spanish, while the educated and multiracial parents of a group of San Francisco toddlers demand that their children be taught Mandarin by hook or by crook. Which group do you think will be more successful?