Murray is better than Holiday. What can make it a little close is that Holiday is a much better defender than Murray, but Murray is still the overall better of the two.
I just saw the Giannis > Tatum "significant" thing though and strongly disagree. Maybe that's true in 2020 and 2021. Not now, Tatum is better overall. I think Giannis has peaked as a player. Obviously he can still remain a MVP-candidate for many years to come, but what else do we realistically think he can improve on and get significantly better at? I think Tatum meanwhile still has some room to grow.
You're not gonna get an argument from me about who is more "championship tough", Giannis has the hardware to prove it from 2021. But at the same time, Giannis' team got bounced in the very first round last season, am I supposed to act like he shouldn't be held accountable for that like Tatum often does in situations where the team frustrates or loses a series (and/or Tatum chokes like the 2022 Finals).