The 'still successful' Eagles went 9-7 last year, while the Pats went 12-4 with Brady throwing to equally bad receivers. If the Eagles were still successful last year, then the Pats were not just successful, but considerably more successful.
I am talking about the offensive production. I am talking about making use of all the receiving group and not honing in on one guy.
The Patriots scored more points than the Eagles (420 to 385), had more passing yards (3961 to 3833), higher passing yards per attempt (6.1 to 5.9), all while having a worse running game (1703 yards to 1939, only 3.8 yard/attempt to 4.3 yards/attempt). The respective running games rank for yards and y/a is: NE: 18th, 25th; PHI: 11th, 19th. So, Brady did more, despite having a significantly worse running game to rely on...
Brady threw to 18 different guys last year, Wentz to 17, the breakdowns are very similar between the 2 (how the attempts, yards, etc are spread between players).
Talent wise, I'm taking PHI group of WR/TE/RB over NE all day, every day. Ertz/Goedert vs 39yo Watson/Lacosse/Izzo is a massive gap in talent. Sanders/Howard/Scott/Sproles vs White/Michel/Rex/Bolden, I might give the edge in passing to NE, however PHI group is MUCH better running with the ball. Agholor/Jeffrey vs Edelman/Dorsett, Edelman is the best of the group, but I'll take the PHI combo over NE because Dorsett has shown useless as anything more than a #3/4 option. The depth beyond that you could argue one way or the other, but PHI's WR depth is certainly more athletic than NE (and most I are 6'+ unlike more midgets in NE)...
Breakdown of the most targeted players:
For PHI:
Player - Targerts - % (Targets/Snaps)
Ertz (TE) - 135 - 14.5%
Goedert (TE) - 87 - 11.3%
Jeffery (WR) - 73 - 14.8%
Agholor (WR) - 69 - 10%
Sanders (RB) - 63 - 10.3%
Ward (WR) - 40 - 13%
Scott (RB) - 26 - 14%
To include their best target (just 3 games):
Jackson (WR) - 10 - 15.4%
NE:
Player - Targerts - % (Targets/Snaps)
Edelman (WR) - 153 - 15.2%
White (RB) - 95 - 19.4%
Dorsett - 54 - 9.6%
Sanu - 47 - 12.4%
Meyers - 41 - 9.9%
Burkhead - 38 - 14.4%
Gordon - 36 - 11.3%
Where exactly is Brady 'only throwing to one guy' compared to Wentz...
Looking at top 5 targets compared to the rest of the targets (targets/snaps):
NE: TOP5: 13.7%, the rest: 7.2%
PHI: TOP5: 12.2%, the rest 8.2%
The facts simply don't support this idea that Wentz did more with less or spread the ball out better than Brady...
If you want to look at quality of Defenses each team faced, NE faced slightly better. Ranks for passing defense (yards) and total defense (points), average for NE: 15.10/16.44 respectively, PHI:17.5/17.19. Top 10 defenses faced (passing defense/total defense): NE: 6/5, PHI: 5/5.
If you want to look at games vs common opponents, it's very close. Average points scored/passing yards: NE: 27.67/256; PHI: 28.25/241. Records: NE: 8-1, PHI: 7-2.
So, again, where exactly did PHI do 'more with less' than the Patriots, with respect to offense and passing? But don't let the facts get in the way of your argument...