User blog comment:20thCentFopp/The Parodic Creation of The Marvel Universe/@comment-24308873-20131106201559

In Stan Lee's biographical documentary "With Great Power" he states that he created The F4 to escape the 60's campy and childish norm,in a last ditch effort to save his company from it's imminent bankruptcy. Thus creating the 4 Mavericks. In said documentary he mentions nothing about their creation being the JL's equivalent. Maybe he did intend to spoof them. Because like you said the F4 have little in common with the JL.