[amotoustict]

As this relates to commentators, credibility comes from consistent accuracy. Some of the commentators are saying things that video evidence clearly refutes. For example, just recently a certain commentator analyzed Rory Mcilroy's swing. This commentator noted that part of Rory's great swing was his ability to keep his hips level throughout the swing. He then drew a line at his belt buckle. During the swing, Rory clearly compressed into the ground at the transition (clearly dropping below the commentator's line) and then exploded up from the ground at impact (extending considerably over the commentator's drawn line). HUH!?!?! This same commentator does that stuff all the time with numerous swings; thus, I lend very little credence to this particular commentator.

Other commentators on the swing provide a simple and accurate description of what is actually going on in the swing and as represented in what we are actually seeing. I find those commentators to be a bit more reliable.