Here are the Strength and PL Tiers as I see them. To me, the exact levels of Strength vis-a-vis lifting strength are immaterial- I think most Fat Guys will have a natural Immunity to Slam moves, up to a certain tier.
STRENGTH TIERS (Approximations):
Andre the Giant
The Big Show
"Hacksaw" Jim Duggan, John Cena
Jake "The Snake" Roberts
Kerry Von Erich
Elite Jobbers, Cruiserweights
Tippy-Top Main Eventers
Lesser Main Eventers
Midcarders, Tag Team Specialists
Tag Team Specialists (Solo)
Jobbers To The Stars
* This is the basic moveset for a pro wrestler- pretty much everyone will have AT LEAST this. Non-Jobbers will have a Healing option. Afflictions are based off of the wrestler's Strength.
"Slams" Strength-Damage +2 (Inaccurate -1) Linked to Affliction 5 (Toughness; Vulnerable/Prone) (Flaws: Limited Degree) (Inaccurate -1) (3) -- 
Descriptions of Moves:
- AE: "Attack Downed Foe" Strength-Damage +2 (Flaws: Side-Effect 3, Limited to Prone Opponents) (Inaccurate -1) Linked to Affliction 5 (Toughness; Vulnerable/Prone) (Extras: Cumulative) (Flaws: Limited Degree, Limited to Prone Opponents) (Inaccurate -1) (2)
- AE: "Pinfall" Affliction 4 (Strength + Toughness; Vulnerable/Prone/Pinned) (Flaws: Extra Check Allowed) (2)
- AE: "Heelish Cheating" Affliction 3 (Fort; Dazed & Vulnerable/Stunned) (Extras: Extra Condition, Linked to Damage) (Flaws: Limited Degree, Illegal Maneuver) (2)
Slams do more damage than unarmed damage, and add Affliction to it, rendering foes Vulnerable & Prone. Slams are Inaccurate. Larger wrestlers have Immunity to Slams from foes of certain Strength.
Strikes are standard Strength-Damage. Typically they are Distracting- missing them leaves a wrestler vulnerable to counter-attack.
A low-level Affliction- "4" across the board for every wrestler, no matter what. If you pin an opponent for two consecutive rounds, you win the match. It has an extra Flaw- it is resisted by both the opponent's Strength AND their remaining Toughness! This means you have to pummel them through most of the match to win.
Linked to Damage, this is an Affliction that leaves opponents Dazed & Vulnerable, then Stunned. Its unique flaw is that it's "Illegal"- it must be done out of sight of the referee, or you get warnings or disqualified.
Presence-Dependent Healing, Limited to Self. Only available to babyfaces, or those who don't cheat much during the course of the match.
Vince McMahon would often declare "SEE-SAW match-up; back and forth!". This is because wrestlers will usually heal from damage during the course of a bout- simple Regeneration. Not available to Jobbers.
Attack Downed Foe:
Legdrops, elbowdrops and the like- they keep an opponent downed (similar Affliction to the "Slam" moves, but Cumulative), hurt them as well, but carry a Side-Effect- if you miss, you take the damage. Naturally, Limited to Prone Opponents.
Affliction based off of a foe's remaining Toughness- the third degree is Submitting. Potentially match-ending, but usually rare and at lower levels- you must wear down your opponent first.