Stiffer.
Example:

Gold Label Jump series 2


Category: High End 32mm Street and Dirt Jumping
Travel: 80mm or 100mm
Wt. Lbs: 4.6
Wt. Grams: 2086.1
Spring: X-Firm Coil Spring
Steerer: 1 1/8th High-strength steel
Damping: FFD with rebound adjust
Adjustments: Rebound
Stanchions: 32mm Gold Al
Casting: One piece Reverse Arch (RA) Magnesium
Axle: 20mm Hex Lock Thru Axle
Crown: Hollow Aluminum
Lubrication: Semi Bath with Evil Genius Seals
Wheel Size: 26
Disc Mounts: Post
Disc Size Size: 210 Max
No Boss Option: Only
Ride Height (mm) : 460, 480
Color: Disco Gold
Notes: Grind bolt on spring leg



Basically enough to take the initial shock out of a biffed landing. It's all relative to rider weight of course. As I said above...preload is always adjustable...especially if you buy air. Rockshox coil forks are kinda pissin me off. The last I was aware, they don't have adjustable spring preload. "Change Spring".