Which is Better – Green tea or Wu-Yi Tea?

Wu-yi (Oolong) and Green Teas contain a large amount of polyphenols. It appears that the health benefit of either tea is the effect of polyphenols.
Green tea is from the same plant as (Camellia sinensis.) as Wu-Yi tea or Oolong tea. After the tea leaves are plucked and sorted, they are either steamed or pan fired. [...]