The truth is that each defence level equals .25 combat levels. There are 98 levels of defense that are equal to 24.5 combat levels. By RS gold stacking additively to the reduction of damage from armor for tanks, defence provides damage reduction on melee, range or magical damage that is that is taken.
As a function level-tier, accuracy and defense from equipment increases by cubical. Therefore, armor of lv50 is almost ineffective against weapons of lv90 level. In PvP, high level armour can be very rarely used due cost. However, high level weapons can often be used thanks the protect-item prayer. Freedom is a defense skill which is vital for EoC PvP. Rejuvenate, Reflect, Resonance, and Debilitate require 37, 48, 52, 55 Defence respectively.
Potions can be used to boost these abilities. Ancient Warriors' pvp armour requires 40 defense. Void is the smallest non-degradable power armour at 42 and Fremmenik at 50. To what extent is this worthwhile? EoC PKing is not available outside warbands.
Because players with warband loot have the ability to attack any player, combat level in the current warband mechanics is nearly irrelevant. Legacy PKing's defence is very ineffective due to the absence of defense abilities. But, Jagex has plans to "revitalise" the wilderness, but no details have been given. Are you planning to reset your defense?
Where does all the money that is being spent come from? Although I'm not an economist, it's reasonable that RuneScape's inflation is constant. The Grand Exchange allows money to be used by a player to go to another player. Money that is earned is usually derived from players, monsters or quests, and so on.
To correct this issue problem, players should return their money to the game. This will eliminate the need for circulating coins. While I'm not sure regarding the Araxxor issue, I believe it would be a good idea to give incentives to players to spend their money so that it doesn’t go to any other player.
Being a fairly inactive participant, I don’t have enough expertise to suggest sensible ways of getting rid of money. There are many ways to get rid the money that has been laying in circulation for a long time, such as cheap RuneScape gold the sawmill, shops, and so forth. They managed to keep inflation under control between 2001 and 2009.