KataGo thinks White leads by 4,3 points, a 3 point improvement over the initial position. Over the course of this pattern, both make several small "mistakes" but Black's accumulate to worse.
There are many moves though that are "bluelisted" by KataGo.
Even after the marked exchange, Black can play more actively at the top, sacrificing the two stones.
Previously, as a defence against Black entering the lower left gets poor marks. KataGo prefers a. Here White loses some of the advantage built up so far.
The moves of to are probably the essence of this opening and mark a first jump in White's chances (undone by the move discussed in previous diagram).
This option has of course been analyzed by the Korean pros. Their evaluation at the time was that this position is "active for Black". KataGo thinks White now leads by ~4 points and should handle this position by invading at a.