True, the way I see it is:
Mcgregor: Best striker, gets tired easily, better than average takedown defense.
Poirier: Good striker but definitely worse than Mcgregor, doesn't get tired, really good takedown defense.
So really the only main disadvantage of Poirier over Mcgregor is the striking power and skill, however, I don't think Mcgregor was in his best shape at all when he fought Khabib, I'm sure the fight will be a bit closer but Khabib is winning anyhow.