3 of 3 edited title

Which is more official, Dragon/Dungeon magazine or the Compendium?

If there is a discrepancy between the original source when it is Dragon or Dungeon magazine and the Compendium, which version of the content should be considered the most official?

When answering How many attacks with Path of the blade ( from Dragon 381) I was surprised that the confusion appears to arise from a slight change to the wording of the power.