She was a 2.5x Guyver with a W'Kar element shard, HSL and CPM. She has literally no weapons save the head beam laser. She has standard Warrior Guyver defense systems and she can shield herself up to 10x Guyver's mega smasher, or a 5 kiloton explosion of TNT. She can accelerate a human's regeneration up to a Guyver's and a Guyvers to 10x faster.

Would her unit merge with a Gigantic unit?

Gigantic units seem to only respond or be compatable with regular type guyver units.

with so many various power systems it's a shame that she is so severely under powered.

indeed but the unit was made to care for Alexandria not to fight

is not protection a form of care

lol true enough but...the matrix never intended for the unit to go into battle thats obviously

Nope, unit was designed to not only protect the child, but also to keep Cassandra alive and cure her of the disease, which it did. Now she's Yaksha.

But the 2nd Apothecary Unit has no need to do either, so is like a different model.

Hummm, so there's two of them?

Yes

Isnt the 2nd Apoc unit being used in the WGU as a suped up Medic

Close support type yes, since she is only 2.5X a guyver.

Not entirely. The one in the WG universe is a Mk. II upgraded model as opposed to the Original. So that one might be more powerful than the original. If the Mk. II ratios are equivilant to a WG2 unit and Guardian's unit, she may be as powerful as a full Warrior Guyver around 4x. However she'll have far different powers.