MvdP did the same CX-season last year. He was better in Flanders, equal in Roubaix and better at the worlds than Van Aert. The problem with Van Aert always was his devastating Tour. Year after year he had to go for stages, had to perform as the master domestique, also in the mountains. And he made stupid attacks from the start. After the Tour, he was totally demolished and couldn't perform at the highest level in august and september. He was still strong, but missed the victories in the olympics and the worlds.
I don't think Van Aert will perform better in march and april. But, not participating at the Tour, but only going for stages in the Giro (in may), he wil be stronger in Paris (olympics) and during the worlds (TT and road).