Inner Ability

That's not your Honor level, it's the ability's level, which is a just random number used to introduce more variance. When they introduced an overall rank for inner abilities, it appeared that they drastically reduced the amount of "levels" possible for inner abilities, so when you're at Epic, the system can't throw you like, Level 11 Drop Rate, which would give you 6% drop, and it's instead fixed to only give you either 15 or 16, which gives you 8%. What level your Honor is has no bearing on how good your inner abilities would be.