I don't think it's a weird case to compare two budget airlines to demonstrate why I think one is better than the other.

Well, the thing is they historically weren't a budget airline. They've taken on some budget airline attributes, but mostly not the dark patterns. Yet. They'll get there.

Ryanair is the biggest airline in Europe. Everyone competes with them. I found if you are traveling with family, need a checked bag and seats - Ryanair has no price advantage over other players.

Aer Lingus is a budget airline? And here I was still thinking that they're the flag carrier of Ireland...

(of course, they can be both at the same time)