Max made that pass work BECAUSE he smoothed out the worst of the angularitites at Turn 17/18 or 16-17/18 (sources can't agree on how that turn is even numbered). So, Adam, thank you for proving my point about the corner shape.
So no, EVERY turn at Mexico City has been re-profiled, down to that relatively mild adjustment to the exit of Peraltada, due to the realignment of the entire first half of the front straight.
Lewis Hamilton F1 Pole Lap 2016:
https://www.youtube.com/watch?v=b-TMH-r9dxY
Justin Wilson ChampCar Pole Lap 2006:
https://www.youtube.com/watch?v=Ty51w6ULG1c
The difference is pretty clear, right?
In addition to changing the corner shapes, when it was redone for F1, the track was actually made narrower than it was for CART/CCWS. Strange, that one.