Speaking of beliefs, the facts don't really support yours.
Little has struggled this year, but much of it has been carrying the two offensive wuderkinds, who, frankly, have sucked defensively at times. L/E aside, the past few games have not been his best and now a bunch of people have a bad case of recency bias. Interestingly, after all that, Little's numbers this year still won't be far off his median production (47 pt/season) since he has been a Jet. And he is on track to be healthier than he has been for most of his career. To say he in the midst of an inexorable decline is a stretch.
In comparison, Stastny's career numbers are very close to Little's although his point production this season projects to be a bit higher than his median over the same 5 yr period as Little (49 pts/season excluding the lockout). But he is two years older than Little, so it's pretty hard to suggest he will resist decline more than Bryan over the next few years. TBH, they are both aging very well, thank you.
I think Stastny is a terrific player and a great acquisition, but Little deserves way, way, WAAYY Y more respect than he gets around here.