In a domestic environment, perhaps. The 757 is still an excellent TATL hauler.
And no plane has the performance like a 757, mind you!
Soon the A321LR will have more range. We're not there on the A321NEO yet and won't get there on short field, but so what?
I will absolutely love to see a fully loaded A321LR try to get in and out of fields like EGE and TGU.
Your "So what" to Lightsaber's "so what" prompted me to ask the question.
Apart from the fact that in identifying perhaps the only 2 airports out of 200 in the USA that actually have a market big enough to support a 757 for even part of the year, where an A321 might struggle, you implicitly point out that in 99% of cases, the A321 will be just fine, which for me lands on the side of Lightsaber's "so what".
What about the specifics?
EGE appears to have a 2 750m (9000ft) runway at 2 000m (6 600ft) altitude.
Wiki suggests that 757's are typically used during the ski season, which implies EGE might be high, but it's not hot.
Using the manufacturers ACAPs (and adding about 2t to TOW's for the presence of winglets or sharklets, as none of the field length data includes them) I found:-
A 757 cannot get out of EGE at MTOW
It should be able to get out on a TOW of about 106t, 10t short of its MTOW (top thrust P+W)
With a 61t DOW, and 20t payload, that leaves about 25t for fuel, which should be good for about 2 700Nm still air
A standard A321 CEO can actually get out of EGE.
It should be able to get out on a TOW of about 82t, 11t short of its MTOW (standard CFM's)
With a 50t DOW, and 20t payload, that leaves about 12t for fuel, which should be good for about 1 600Nm still air.
On these figures I have made the assumption that at that range the extra efficiency of the NEO is offset by its higher OEW (less fuel - same range)
So if "fully loaded" means with c. 200 pax then, yes, an A321 will do that. Only it will fall 1 100Nm short of the 757.
Here's the thing though.
An A320 NEO should get out of there within 1t of its MTOW
It should be able to get out on a TOW of about 78t, 1t short of its MTOW
With a 44t DOW, and 18t payload, that leaves about 16t for fuel, which should be good for about 2 700Nm still air.
So yes, you're leaving 20 pax behind out of 200, and only taking 180.
But you can fly them out of EGE the same distance as a 757, with only 60% of the fuel tanked.
So what indeed