If the Eagles lose tonight they would already have two division losses. Even if the Eagles were to beat the Cowboys, the Cowboys would still get the division tiebreaker if they beat the Commanders week 17.
Wrong
Cowboys would still need to win at least 2 more games minimum.
if Eagles lose tonight, they are 5-8 (1-2 division)
Cowboys are 6-7 (4-0 division)
Eagles win out they are 8-8 (4-2 division)
if Cowboys only beat the Commanders they will finish 7-9 (5-1 division)
Unless you have the Cowboys beating the Rams, they have to beat the Eagles