Enable or Disable Rev. A (in EPST)?

[duofold]

Mark, you seem to understand why I'm puzzled.

The wording is really odd (or maybe not). Enable (which the TP2 is set at) vs. enabled. Enable, as in, asking you if you want Rev. A., change this setting.

But then why would Sprint disable Rev. A out of box? Doesn't make sense. But I am getting substantially higher numbers on speed tests when changed to 'Disable'.

Any other speed comparisons?