I don't know if this is real but i found this site where you can see the pro abilities of the perks.
here it is:
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I found this thread on the forum and people liked it so I reposted it in the news section. please give credit to _Jesse_

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Lightweight
Normal: Move Faster.
Pro: Aim Faster After Sprint. (2000 CoD Points)

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Scavenger
Normal: Resuply From Dead Bodies.
Pro: Extra Magazines (2000 CoD Points)

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Ghost
Normal: Invisible to Spy Plane and Blackbird.
Pro: No Red Crosshair when Targeted (2000 CoD Points)

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Flak Jacket
Normal: Less Explosive Damage.
Pro: Less bullet Damage (2000 CoD Points)

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Hardened
Normal: Killstreaks Require 1 Less Kill.
Pro: ?

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Steady Aim
Normal: Hold Breath Longer.
Pro: Reduces weapon sway while aiming through a Sniper Scope (2000 CoD Points)

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Steady Aim
Normal: Extra accuracy when shooting from the hip.
Pro: ?

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Sleight of Hand
Normal: Faster Reloading
Pro: Faster ADS (does not work for snipers) (2000 CoD Points)

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Warlord
Normal: 2 Attachment on your Primary Weapon
Pro: 2 Attachments on your Secondary Weapon (2000 CoD Points)

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Marathon
Normal: Longer Sprint (NOT unlimited)
Pro: No falling damage (2000 CoD Points)

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Ninja
Normal: Silent Steps
Pro: Move through Motion Sensors and Camera Spikes undetected (2000 CoD Points)

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Second Chance
Normal: Pull out pistol before dying
Pro: Use equipment as well as pistol (2000 CoD Points)

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Hacker
Normal: Detect enemy equipment and explosives
Pro: Booby trap enemy Care Packages and turn enemy killstreaks and equipment friendly (2000 CoD Points)

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Tactical Mask
Normal: Reduce the effect of Flash and Concussion grenades
Pro: Night Vision Goggles (yay)(2000 CoD Points)

Going to keep updating so check back later