RQ vs D&D
Made this as there was some discussion about it in another thread that was kinda going off-topic. So here, now there's somewhere to discuss differences and advantages/disadvantages to each without derailing other threads.
Attacking someone with a sword is very predictable, defending with a shield is very predictable. We don't combine those rolls and have a single result - we have an attack (which either succeeds or doesn't) and a parry (which either succeeds or doesn't). Then we figure out damage, how much is blocked, how much gets through armor, etc. We DON'T have a single opposed roll.
The Opposed Roll used in RQG results in a lot of ties - by design. It is roll low with the better level of success the win
