Or maybe it's probably something to do with hard work and being willing to learn from others (fixed wing unions). Following your logic, I guess a dutch CHC captain makes the same as a KLM captain... And they both drink Heineken of course...?
Where did my 'logic' start discussing aircraft size? My point is that it is easy for a union to negotiate good Ts and Cs when the country it exists in is the third richest - per capita - in the world! If you find that an unpalatable fact, then I'm sorry to upset your view of reality!