Hypothetically lets say you're watching a guide for a game you like. You're stuck at one point or you want to become better...
Would it be better if you saw how a moderately good player plays and learn it first hand from first person point of view. (With commentary whilst playing)
Would it be better if you see that moderately good player cast the game from a 3rd person point of view and commentate on a replay of the game he played said above. The advantage here is that you could learn whats happening from both sides since there wont be a limitation to only a 1st person PoV.