The Rule of 2

In my games I've been using the rule of 2. The rule of 2 is easy. If you are better at 2 things over your oppoent or 2 steps better you get +2 to your rolls. If you are worese at 2 things compared to your opponent you are -2 to yuor rolls. I keep track of quality of manufacture and materials used in equipment. So if your weapon is 2 steps better than an opponent's armor you are +2 to hit. Two or more friends helping you out in a task? +2 to yuor roll! Ability contest between two characters? I use a 1d20 roll vs opponents ability score. As we alreayd track differences in ability scores in the score itself and ability modifiers to rolls that diffwerence isn't factore into the rule of 2 but levels are. So if you are 2 levels or higher than an challenger yuo are +2 to your rolls and they are -2 to their roll. Oh is this saving throw 10th level but you are only 5th level. That's -2 to your saving throw roll! (oh no) Oh and only ever apply the rule of 2 in two factors at most keeping all modifiers the rule of 2 could apply to form -4 to +4. I like fiddly details but I also recognize not all players can track a lot of details and apply the math quickly. So I keep the math out of the descriptions a lot of the time. why 2 instead of one? Becasue a shift of only 1 isn't really noticable on a turn per turn (or round by round) basis beyond what the rules are already keepign track of in most situations using a d20 roll. the rule Rule of 2 baby!