Ship Health

Did he have a higher gear Biggs ?

Mirrored ship and crew member will always have same ship stats.
There is a long post on reddit that explains it all if you want to do the math.

If opponent has more of any stat then you that means he has something more developed than you. There is currently no way to "mod" a ship to increase stats beyond max.

What type of mod your crew got doesn't matter at all
Ships are simple
You just need to increase raw power number of ships to increase their stats. There's no other way.
So
1. Increase the power of the crew (6 5 dot level 15 mods are enough, no speed secondary, potency cross needed)
2. Increase the star of the ship and ship ability levels, and ship levels.
3. Done.