your chance to hit with a human 20 wrestling a target with 120 defense skill is pretty low tho. Assuming you have 45% hit chance and your target has 0% DCI (a monster) ,you'll have 20% to hit a 35% proc (or 40% with real bracers) which give a total of (0,2 x 0,35) = 7% or 8% with real bracers to proc the lightning. Not very reliable specially im not even considering if target has parry you'll need to multiply another 0,35-0,4 to the 7% or 8% so down to 2,5% ish, if target has parry.
If you have 120 wrestling with bracers tho , your chance to proc the lightning get reliably high around 28% in pve and around 20% in pvp, if your target has 45% dci and no parry, but down to 7% if target has 45% dci and parry.. so im not even sure if a 7% in pvp is reliable at that point, sure its good when it procs but meh