As for FR being the largest 732 operator, this is probably since Southwest binned theirs for being below a critical mass of planes for maintenance, pilot cadre reasons (they reckon 25 is the minimum of any type they want on their books).
SWA still has 22 B737-200's left. They will be gone by this time next year.
Ryanair gets bashed on PPrune from other airline pilots (BA) because they are not like their legacy carriers.