The Giants still need to turn those FGs' into TDs'. In other words, their red zone offense is not very effective.
The Giants did not play well in the opener. It is partially the faults of replacement referees. I rarely blame the loss on the officials but the referees failed to spot many fouls in the first game.
XXQQ probably won't like this. The Cowboys took advantage of inexperienced replacement referees. The referees missed a lot of offensive line holdings, illegal contact down field, defense holdings on the Cowboys team. The Giants abided by the rules but the Cowboy players kept testing the limits of the referees.
Once the replacement referees settle down, things will go back normal. I hope that the process can be speeded up a little bit :)