#2 The WWE commentary teams are too cookie cutter
If you watch WWE Raw and SmackDown Live consistently, you can tell that both commentary teams are produced to mirror each other, and each announcer's role is similar to that of the opposite brand's counterpart.
In the case of SmackDown Live, you can hear Tom Phillips using many of the same verbiage used by Michael Cole on Raw, because Phillips is produced to mirror the style of Michael Cole's commentary. With Cole acting as the announce team manager, so to speak, it's easy to understand why he and Phillips sound similar.
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Since Corey Graves appears on both Raw and SmackDown Live, he has no counterpart, leaving Renee Young and Byron Saxton to be produced similarly.
The cookie-cutter nature of the announce teams on both Monday and Tuesday nights has withheld Renee Young from really expressing her true voice on WWE Raw.