Consider me 'meh'. Boeing and Airbus got to do some grandstanding, and the nice lucrative pile of corruption that goes on behind the scenes of the whole industry keeps on turning. I don't consider it a win or a loss for anyone.
This was basically a case about just how publicly and openly corrupt aircraft manufacturers can get away with being. Previously, they at least put some effort in to hide how much they were secretly being subsidized by their respective home governments and how much of a discount their customers got as a result. But this time around Bombardier either didn't bother or didn't succeed in keeping that mostly under wraps, and that seems to've violated an unspoken norm of the industry, which provoked Boeing to go after them. Which then provoked Airbus to get involved to try to spite Boeing. Which then made it a major story that people actually heard about.
I find it hard to conclude that there's a "good" or "winning" outcome here that doesn't involve addressing the underlying industry-wide corruption.