Earlier quoted context omitted.
The European champion would still be ten times smaller than the Chinese but would have factual monopoly in Europe. I don’t think blocking the merger was entirely unreasonable.
The parent comment is describing a scenario where the Chinese company may get a factual monopoly in Europe because it can outcompete the two European companies due to economies of scale.
It's really confusing that the EU don't consider this "dumping". I thought that was this big thing that they cared about.