I'm not sure if paratroopers are represented all that well ingame, for what they achieved historically.
If we look at the airborne landings for D-Day, and Operation Market Garden, then, the scale of those operations is much smaller than what can be done ingame - to transport the troops for Market Garden, 3 airborne divisions, took so much of the air transport capacity of the Allies, that they couldn't do it in one lift.
For D-Day, if we look at the map scale of the provinces, the paratroopers weren't dropping in the province south of the beach, they were landing on the beach province. But if you do that ingame - dropping onto entrenched enemy units, then the paratroopers will generally fare poorly.
For Market Garden, the action takes place over what looks like just 3 provinces on the map. And again, it doesn't really represent the airborne divisions landing in fields some distance from the defended objectives.
I'm also not sure about how much organisation they lose paradropping, and the penalty to organisation regain. It makes them very easy to defeat for 5 days, which is longer than a lot of airborne operations lasted historically. And their higher organisation compared to normal infantry, makes them superior at holding a defensive position after a period of not having parachuted. Which might help represent the 101st Airborne's defence of Bastogne during the Battle of the Bulge, but does also seem a bit counter-intuitive at times.Yes, 70% air superiority, in all air zones from the source airfield to the drop zone.