Because the industry.
TLoU has 18 fps gets GOTY
Sonic Boom (obviously not the better game here but still) also has a bad framerate but this game does get a "contra point" called "choppy framerate". (OR if not TLoU compare it to AssCreed Unity or any other game that is semi-unplayable) but I guess if you have to pay for your own review copy then criticizing framerate is okay....
COD never gets a "contra" for being "too similar" Skyward Sword got one even if its one of the more different Zelda games (linearity focus on motion controls. Pretty story driven. The overworld kinda being dungeons on their own) . Good job gametrailers!
I wonder if GTA5 on current gen will get a better score than the last gen version. In theory it cannot because the industry always said "its old cant get a better score" to everything that was rereleased so far.
But actually it has to get a better score. It does look better it has more content it does not have shit framerate that kills the precition of the controls like last gen had.
But whatever review scores are arbitrary opinions partially influenced by $$$ partially influenced by agendas or randomly rolled by dice.
Tbh if you want a review that is as legit as a "professional" review. Go buy a "fake dice" that always rolls 6. And then buy a real one roll it and add the random number to the 6 of the fake one. (reroll if 5 or 6 was rolled on the real dice)
Edit: just found out even the PS4 and XBO versions cant sustain 30 FPS. FAIL....
The Last Of us had a few instances where it would drop to the upper 20s. The entire game doesn't play like that, however, and reviewers noted that it was evident that the system was pushed to its max. That's completely different from a game that has points docked for being blatantly incomplete. It was GOTY for what it brought to this very industry.
In this case, none of those things are relevant because GTA is simply rated higher because it has a better average of review scores. It's not, at least to me, because it is: "just the better game".