Before 2012 there were no Solomon's store and squel of fortune this are features ingame which make it able to buy items/cosmetics/exp and ingame currency for real money.
And the combat part is totally changed, runescape had an unique combat style, now they changed the combat.
They added abilitys, weapons which were good are now totally garbage, every armor above level 70+ defence is now overpowered as fuck.
The old combat was balanced, altought some weapons were overpowered, but you had special attacks on weapons, each had his own special, and some didn't have.
Also the combat leveling is fucked up.
Before EOC the max combat was 138, now 200
Per defence level you go 1 level up so you can be for example
Level 100 with 10 hp, 99 def and everything else 1
And someone else can be level 100 with everything 70+ and defence 1
And the worst of all is the amount of players is going dramatically down.
Pre eoc on a saturday - 300,000 people on average
After the new combat - 80,000 people on average
Runescape 3, which requires an high spec computer to play well - 30,000 people on average
That game is dieing.