Barely anything increases strength lol forreal, You have no idea about OSRS items or pre-eoc items whatsoever. Primal boots at 10 str were unmatched pre-eoc and even by osrs where their highest is 5. Gloves had 13, amulet had 12, cape had 8, but pre-eoc also had soaking to balance it. What you don't understand is that damage really was this good pre-eoc, you're just blinded by the idea that everything should be nerfed until kills are impossible. Nobody wants to play a game like that, and if you do then just piss off. Spending 5 hours waiting for one rambo whip-dfs-ags is not enjoyable or skilled whatsoever.
Note:pre eoc pking other then nh'ing doesn't really massive skill anyway, even bridding is easy once you know the basic concepts