Problems in the simulation and verification of Aspen heat exchangers

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An air-cooling model was introduced into the Aspen process (from HTFS+ to B-JAC) to simulate the air cooler, showing the exit temperature of the heat flow: the thermodynamic result in the Aspen interface was 49.8, while the value in HTFS+ was 48.7. The required heat exchange area is 14,500, while the actual area is 9,340; in other words, the required area is smaller than the actual area. Question (1): Why are these two temperatures inconsistent? For the same air cooler, with the heat flow exit temperature set at 49.8 and the mode changed to verification, the result was that the required heat exchange area was 9040, while the actual heat exchange area was 9340; in other words, the required area was larger than the actual area. Question (2): Under the same conditions as above, why is the actual area in the simulation far from sufficient, while it meets the requirements in the verification? ?