Romo is extremely charismatic and has a good TV voice and subtleties in his tone that fit in the booth, along with having that knowledge (and it’s more like a few times a game not 80%...). Luke is very articulate but from what I’ve seen he doesn’t have that charisma like Romo does. I have no doubt he could know the plays like Romo does but depending on how he came across, he could just be annoying and nerdy (football nerdy) sounding where people wouldn’t want to listen. Honestly I think he’s be like Witten last year. It’s not a natural thing for them. Greg on the other hand is an absolute natural.