Wouldn't be right for me to speculate; I've played neither. The only thing informing me are my own prejudices, and I'm trying to avoid those kinds of answers.
I will say that critics have standards, and different critics have different standards, and different games exceed or fall short of those standards in different ways. So if you think there's a singular, underlying reason to account for a relatively small difference in a broad consensus of different critics on different games...
...maybe you should avoid those kinds of answers.
I believe in honesty, civility, generosity, practicality, and impartiality.