Din is more of an analyst than a commentator. He's good in limited doses. You let him come in, deliver his take on what each fighter is doing right or wrong thus far and what their best path forward is... then you promptly tell him to fuck off. Frankly I think Cruz should be used in the same way as he's too dry and terse to be a good color commentator, but that's neither here nor there.
DC is... okay... when Joe isn't around for him to riff off of. He's a bit lazy and underschooled on the material at times, but his practical experience shines through especially when walking the audience through wrestling exchanges, plus he has that loveable oaf charisma to him.