Well. Yes.
What I meant by +numbers is the "MOAR HEALTH, MOAR DAMAGE" upgrades.
I would even say that the VAST majority of upgrades should not be pure numbers.
One thing to note is that all the upgrades aren't on the design doc yet
Here’s the list so far
Hardening, Armor, Range Increase, and Speed Increase are numbers boosts. The rest are mechanical in nature.