Dave can create a list of things that DXLab can do and HRD cannot and that means nothing until we see a list of things that HRD can do and DXLabs cannot.
KB1NXE posted a "list of things that HRD can do and DXLabs cannot" in #322; four of his six claims were demonstrably incorrect. The "list of things that DXLab can do and HRD cannot" posted in #326 was in direct response to KB1NXE's request.
The coverage map produced by that site is not very useful. Compare it to this:
If I depended on Voacap I would have lost out on half of my rare ATNO's. Other than just plain old grey line work the rest of it might as well be reading tea leaves, at least that has been the case for Cycle 24.
Using that coverage map, I don't doubt it. As illustrated above, the VOACAP engine can produce better information. Furthermore, the knowledgeable DXer's exploitation of propagation is not limited to prediction. NCDXF beacons reveal actual propagation to specific locations. DX Spot analysis also reveals band openings, e.g.
DXing without a good grasp of propagation is like fighting with one arm tied behind your back. Do yourself a favor and read Bob W9KNI's The Complete DXer