I think 2020 will be the year of DC..
I am not underestimate the potential of Eternals and Black Widow, I am sure they will do big numbers but considering MCU now in the period of calm after massive 11 years of Infinity Saga, I think the hype is not quite the same or has not yet again reach the high ground (at least until their next major crossover team up or when the very first X-Men MCU movie comes out).
In the meantime, I think DC will have the upper hand for the first time with WW84 and BoP next year and also with Batman, Aquaman 2, and The Flash in 2021 and 2022.