Quote:
Originally Posted by Skarg
But the rounding effects are different if you subtract 10, halve and round first, as opposed to comparing DX and then halving and rounding that.
With Chris' compare-later system:
DX 10 attacks DX 10 at 10, and vice versa, of course.
DX 11 attacks DX 10 at 11, and DX 10 attacks DX 11 at 10.
DX 12 attacks DX 10 at 11, and DX 10 attacks DX 12 at 9.
DX 13 attacks DX 10 at 12, and DX 10 attacks DX 13 at 9.
Notice that each increase in DX results in either a +1 to hit or a -1 to opponent's attack. That more or less retains the same sort of balance for DX that the original game has.
With pre-calculated DEF = (DX - 10) / 2 (round up):
DX 10 attacks DX 10 at 10, and vice versa, of course.
DX 11 attacks DX 10 at 11, and DX 10 attacks DX 11 at 9.
DX 12 attacks DX 10 at 12, and DX 10 attacks DX 11 at 9.
DX 13 attacks DX 10 at 13, and DX 10 attacks DX 13 at 8.
Notice that each increase in DX gives you a +1 to hit, but every SECOND increase in DX ALSO gives you a -1 to be hit. So not only is the difference in DX 50% greater than in Chris' system, it's also uneven: increasing adjDX to an odd number is twice as impactful as increasing adjDX to an even number. And so in choosing armor or shield, you'd want to consider that it's better to reduce your adjDX to an odd number than to an even number.
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The attack number for 12 is 11 and the attack number for 13 is 12.
Also, I think you forgot the +1 even/odd adjustment for 10 attacks 11 and 10 attacks 13. Since this only affects 25% of attacks, I'm still not sure whether it's worth tracking.
So I think my numbers actually end up the same as the ones you listed for Chris'.
Whatever system requires the least amount of consideration is good for me. As GM, I'll help the players if they need it but in general I want them to do the dice rolls on their own.