The results reported in the paper are different from the ones in here. #2
Description
In the paper, your model on pose estimation is trained and validated based on the Simple Baselines, and uses the same human detector results the Simple Baselines provided. However, according to the results you're reporting here. The results compared with the Simple Baselines are evaluated on the ground bounding box, not the ones with the human detector. But the Simple Baselines results you compare with in the paper is evaluated with the human detector, not the ground truth bounding box.
Since the results you reported in the paper is on par with the HRNet's results, it made me think that high-resolution feature maps are not that important after all. Unfortunately, when I want to do something based on the Simple Baselines modified by the Res2Net your paper proposed, I then found the fact that your model is nowhere near the HRNet.