In my opinion, if we're purely speaking about what you can control, it will be easier for Remco to win the road race than he will to win the time trial, especially after yesterdays news of the no-show of Pogacar. The latter comes down, mostly, to form of the day between Remco, Ganna and Tarling. The margins between them on such a course are rather small. If Ganna and/or Tarling have a good day and Remco has a normal day he ain't winning.
The road race, on the other hand, will be chaos galore. You can win even on your worst day. It might be comparable to Glasgow in vertical meters, but hardly in the amount of corners. Most of the riders said Glasgow was the hardest race they had ever done due to the amount of turns, and the amount of times they had to break and accelerate. Essentially it was a CX race on tarmac, which is where Van der Poel shines and nobody on the planet comes remotely close.
Paris will see a lot more straight roads, it's more than 200k before we hit the circuit and with the amount of riders on every team, is impossible to control. This is where Remco shines. One moment of hesitation, and he is gone, with Wout sitting in the wheels. This almost somewhat succeeded in Glasgow, which was probably the worst course they could ever draw up for Remco, because he is terrible at cornering and not as explosive coming out of them compared to Van der Poel, Pedersen, Pogacar and Wout. It would just so happen that Van der Poel lost his biggest ally in Pogacar, and Pedersen might not be 100% after crash.