The 321's are not nearly as performance restricted, or require as much runway as a 900ER. But when heavy they still require a lot more runway than a 757. I would call it a "clipped wing" 757. They have a bunch of power (34k per side), but the V speeds are high when heavy. They do get to those high V-speeds quickly, but they chew up some runway doing it.

The LR 321 NEO will be closer to a 757 replacement, but not quite. I doubt it would get off the ground in OGG and fly to the West Coast with a full load.

Did I mention they are quiet and comfortable for both pax and crew?