Just as a reference, Remco pushes ~390W avg in TT position for 40minutes. (TT in Volta ao Algarve), and Remco road vs TT setup difference is rather small
If you assume same cda, which i highly doubt, he would need to push 6,5W/kg (assume 60kg base weight) in TT position to be comparable to Remco in the TT.
and I don't think Remco won a single TT against WVA? So either WVa is pushing relative low numbers and still dominates the field... Vingegaard should be pushing >6,5W/kg (accounting for higher cda, + potentially winning from WVA if he didn't stop pedalling).
(And i'm not sure he would still weigh 60kg at the end of a GT. typically you loose a little weight.)