Nice post. I feel like you have made a weird assertion here though. Since both offense and crit damage sets are % based damage increases, the unmodded starting offense value is irrelevant (at even gear levels anyway, with partial pieces towards the next level, the offense set can lose relative value).
There is really only 4 variables that can sway the overall damage increase to favoring 1 set over the other:
1. Offense secondaries
2. Crit damage bonuses from leaders, abilities, and buffs
3. Crit chance % after leader, abilities, mods, and buffs are accounted for.
4. Incomplete gear tiers.
You are absolutely correct that without equal secondaries there's no point comparing, the one with better secondaries is always better.
