They aren’t different scenes.
They come at the same part of the same plot and are framed the same way.
ANH Our heroes have just escaped a rescue attempt on the main female character and are in the process of making their last moves in order to escape the planet smashing villain fortress when the older mentor is intercepted by the masked lead villain who has a past with him.
Our other heroes are divided from their confrontation by a pit and the older mentor is killed.
The lead hero reacts violently to his noble sacrifice and make their escape.
TFA Our heroes have just escaped a rescue attempt on the main female character and are in the process of making their last moves in order to escape the planet smashing villain fortress when the older mentor is intercepted by the masked lead villain who has a past with him.
Our other heroes are divided from their confrontation by a pit and the older mentor is killed.
The heroes react violently to his noble sacrifice and make their escape.
The only difference comes from the characters and I like the new characters and the old characters but the new ones are just repeating the actions of the old ones so I can’t engage with them.

I have seen this scene in the prequels too. Qui-Gon killed while Obi-Wan is trapped behind a force field.
At least they mixed it up a bit by having the Luke character kill the Vader replacement.

If they had subtitles for Chewie I bet he called out “Nooooooooooooooooooooooooooooooooo!” at the same point too.