McCourty was in perfect position on that 28 yard completion to Thomas?? Wow, now I've read everything. The ball was OBVIOUSLY "underthrown" on purpose, and Devin couldn't adjust. It's no coincidence they ran a route that deep on a 4th and 1, they were pretty confident McCourty wouldn't be in good position to make a play. And they were right.
First off, I said excellent position, not perfect.
Secondly, let's at least recognize that Thomas is a good receiver who has two big advantages on this play:
1. McCourty is on an island against their best receiver. There's no safety help and McCourty has to protect against the touchdown as well as the catch.
With the ball in the air, you can see how close they still are.
2. If it was an intentional underthrow, then Thomas has a second advantage of knowing it and starting his break on the ball. With that in mind, you can see Thomas working back towards the ball and still having to go to his knees to complete the catch. McCourty has overrun the route a bit, but again, also has to protect against the touchdown.
I'm still not convinced of the intentional underthrow considering the high arc of the ball. It would have been better to drive that throw considering there's no one else on that side of the field and he has a clear throwing lane. A screenshot doesn't really justify it but you can watch it on NFL.com's game highlights.
McCourty didn't respond quick enough, no doubt about it, but he played the route pretty well considering the circumstances.
I'd also take a second look at the highlight reel as it appears to be Manning's 3rd or 4th read. He looks down the middle, looks to the left, and then right before throwing, maybe even looking back down the middle again before looking to Thomas. So I don't believe the play design was specifically to throw deep on McCourty. And don't suggest he's looking off the safety when there's no safety within 10 yards of Thomas and McCourty.