Im not a fan of 'opposed' rolls, per se, but I do like a parry roll, and even followed by a variable armour roll. It can get long winded at 'runelord' status, but it reminds me of a kind of 'dance of death' where each combatant searches for that lethal opening in his opponents defence. (I like the gradual disintegration of weapons and shields too, unless they are magical).
This has the benefit too, of safeguarding decent characters from an overly lethal combat system. So a guy with, say 80% in attack and parry is exponentially more likely to win against a lesser opponent, barring a few unlucky slips here and there, which is fairly realistic and brings a bit of excitement to the proceedings.
RQ combat isnt really all that deadly for a competent character. Thing is, he can probably only get away with, say, one mistake, then he needs to take extra care. It IS pretty lethal for incompetent characters, though! But, if they are victorious in their early carreer, they can be there for a long time afterwards, as long as they dont pick on anyone they shouldnt.
In D20, by comparison, the system is ruled by a constant disintegration of hit points. There is an almost certain chance that a lesser opponent is going to lose against a better one, and, even if things go badly for the high level character, (unlikely), he is warned well in advance of his predicament. Less exciting in my opinion.
But, you know, D20 is great for other things. You can see real, but slow character advancement, the gradual accumulation of wealth and power is a real draw, and the whole thing seems 'character-centric', in that the system does everything it can to create an epic, long term campaign.