The concluding sentence is:
> Higher fuel prices would benefit Bombardier, as they have the more efficient airframe.
Or as the main entry for the C Series cited says:
> 21% lower fuel burn for the CS300 replacing B737-300s with a dependability above 99.3%, and 25% lower costs than the RJ100 for the CS100,
And your link states that:
> Boeing also reportedly gave United a massive 73% discount on the 737 deal, dropping the price to $22 million per aircraft, well below the CS300 market value at $36 million.
I am not an aeronautical engineer or a trade economist. So I really don't know but the use of the term "dumping" seems overblown given those statements. I guess we will see.