You misunderstood me Logic-...
If Tadej drops Remco on the Roche, for Remco to catch up in the remaining 15k, he not only has to be a naturally better rouleur (I dont argue that he is not) but also have less effects of attrition, because with enough attrition even a better rouleur (MvdP) can lose. And attrition is a relevant factor at the end of a race with lots of climbing and over 250km of length.
I argue that compared to the people who get more affected by attrition on the climbs than Tadej does (99+% of rouleurs), Tadej will be in an even better spot than he was at Flanders, because there are more climbs here (that work in his favour attrition wise). And at Flanders there were enough climbs that no rouleur was able to match Tadej at the end (because of attrition), and there were all the worlds best rouleurs (but Remco) there.
So for Remco to win the rouleur game, he has to be close to equal in the attrition game. To be close to equal in the attrition game, he has to handle the climbing meters (with regards to the attrition, not the lack of the kick Tadej has (but that can play a part in attrition games)) close to equally as good as Tadej.
Which is also how I concluded my post that you quoted.
So for that to work, you'd expect to be basicly as good on the climbs as Pogačar (and unless he goes pure tempo chase mode) that also includes covering Pogačars potential accelerations with his own (and he failed at that game vs Roglič once this season (by being tempted into an all-out too soon (because he didn't want to play that game, because he believed it was not in his favour) ).
In other words:
Remco must not pay more (in terms of energy for the day) on the climbs that Tadej does.
Not saying it's impossible, but it's a big ask.