You've no idea what you're talking about. Judging skills and knowledge based on the recruitment process of an airline is simply laughable. The answer is no I can't tell the difference between a Vueling pilot or an Iberia one. Partly because you're both speaking Spanish or level 2 ICAO English.
I've shared apartments in Madrid with Iberia FO's who've 10000 hours making less then 50% salary then what I make and I've 6000 hours, so you tell me who's using more vaseline?
Honestly, I've never experienced any "Flag Carrier" type crew like Iberia anywhere else in the world, where they really think they're the best out there, and go out of their way to try and look down on everyone else, with absolutely nothing to be proud about.