depends on some of the more specifics. the specific times of the flights will have more or less congestion, depending on the amount of traffic in the area and on the ground at the scheduled time. I have no idea when the flights leave either direction, but very possible the YHZ-EWR afternoon flight lands at an extremely busy time, meaning they may be expecting to have a longer time of decent/approval on final, as well as greater taxi time when close to arrival time, whereas the afternoon departure from EWR may not be such a busy time.

Beyond that, there may be other items. For example, while taxi time may be as busy for both, once a departing flight actually leaves, it'll get out of the area quickly, while an arriving flight has to get in line for their actual landing, which could take time, them have the extra taxi time due to traffic on the ground. At YHZ, they generally aren't having those kinds of heavy traffic issyesvin the air or on the ground than NYC-area does.