What is the best skill based mmo

The term "skill" is interpreted in many different ways when it comes to the MMO genre. Some people would claim World of Warcraft requires a high degree of skill because it requires the correct usage of over 30 skills depending on what class you play. Some people would claim Guild Wars 2 or Tera due to the necessity for timing your skills and avoidance of harmful enemy abilities. The upcoming Wildstar-Online could arguably require more skill thanks to how their telegraph system works.