From Mard35 in #120:

Defense breakdown to % x 5 currently. Crit Avoidance should not be here because it’s not a real avoidance which is summed up with all the dodge, parry, block and miss. Little example: item has 49 defense rating, it’s a 0.4% dodge, 0.4% parry, 0.4% block, 0,4% miss which means 0.4 x 4 = 1.6% Total avoidance. Yes, it gives 0.4 % crit avoidance too, but Total is still 1.6% = 0.4 x 4.

Thank you for the suggestion @Mard35. Sorry it took awhile to implement, but the latest version of RatingBuster no longer uses the "x5" for Defense, and instead provides options for each individual stat, so you can choose which ones you'd like to see.

This also means it now correctly separates the amounts when they're different because of Diminishing Returns in WOTLK, and automatically combines them when they're the same: