Different schedule pattern and different strain of Bermuda grass. Plus, they didn't aerate it this summer.
There was a game on Sept. 1, then again on Sept. 17 & 24....and not again until Oct. 15th..then not until Nov. 4 then 11
I think NE uses a sand based infill vs. the rubber pellets. I know some players complain about the rubber pellets and still picking them off days later.