I'm confident that they're speaking in terms of max hits in staking. 96 strength allows you to hit 25 with a whip, and having 99 strength won't increase your max hits. Those 3 extra levels make up 1 combat level, so in a way theres no point going higher.
Here are a list of staking max hits:
Strength levels-------------------Max Hit----------------------Weapon
96-99--------------------------25--------------------Abyssal tentacle
92-95--------------------------24--------------------Abyssal tentacle
87-91--------------------------23--------------------Abyssal tentacle
83-85--------------------------22--------------------Abyssal tentacle
79-82--------------------------21--------------------Abyssal tentacle
75-78--------------------------20--------------------Abyssal tentacle
70-74--------------------------19--------------------Abyssal tentacle
66-69--------------------------18--------------------Abyssal tentacle
Strength levels------------------Max Hit----------------------Weapon
99------------------------------25----------------------Abyssal whip
95-98--------------------------24----------------------Abyssal whip
90-94--------------------------23----------------------Abyssal whip
86-89--------------------------22----------------------Abyssal whip
81-85--------------------------21----------------------Abyssal whip
77-80--------------------------20----------------------Abyssal whip
73-76--------------------------19----------------------Abyssal whip
68-72--------------------------18----------------------Abyssal whip
Strength levels------------------Max Hit----------------------Weapon
97-99--------------------------20----------------------DDS Special Atk
91-96--------------------------19----------------------DDS Special Atk
85-90--------------------------18 ---------------------- DDS Special Atk
79-84--------------------------17----------------------DDS Special Atk
75-78--------------------------16 ----------------------DDS Special Atk
69-74--------------------------15----------------------DDS Special Atk
63-68--------------------------14 ----------------------DDS Special Atk
59-62--------------------------13 ----------------------DDS Special Atk
Strength levels-------------------Max Hit----------------------Weapon
95-99---------------------------22----------------------Dragon Scimmy
90-94---------------------------21----------------------Dragon Scimmy
85-89---------------------------20----------------------Dragon Scimmy
81-84---------------------------19----------------------Dragon Scimmy
76-80---------------------------18----------------------Dragon Scimmy
71-75---------------------------17----------------------Dragon Scimmy
66-70---------------------------16----------------------Dragon Scimmy
61-65---------------------------15----------------------Dragon Scimmy
Strength levels------------------Max Hit-------------------Weapon
94-99--------------------------11----------------------Kick
84-93--------------------------10----------------------Kick
74-83---------------------------9----------------------Kick
64-73---------------------------8 ----------------------Kick
54-63---------------------------7----------------------Kick
44-53---------------------------6 ----------------------Kick
34-43---------------------------5----------------------Kick
24-34---------------------------4 ----------------------Kick
Source:
In-Depth Runescape 2007 Staking Guide!