What people don't realize with all the fawning over the Eagles is that their defense has taken a pretty big hit from last year.
They lost 2 of their top 4 (arguably top 3) DL in Josh Sweat and Milton Williams, Nakobe Dean is going to miss significant time and his replacement last year Oren Burks left in FA, Darius Slay and Chauncey Gardner-Johnson are gone.
That's five starters, two in the secondary, and the DB replacements are uninspiring in Adoree Jackson and Sydney Brown. Jihaad Campbell looks good but he's a rookie and has some warts of his own in coverage, so I could see their defense struggling a bit early on, especially against the pass.
The issue is that their offense returns everybody more or less, although they completely reliant on Barkley last year and if he misses any time or regresses as the year goes on due to his age, they're going to struggle big time.
On paper they still look strong because the offense is intact and they still have their big defensive names (Carter, Baun, the two rookie DB's) but if you dig a little there is a lot of risk of regression, especially defensively.