Epsilon3 said:

Just a guess  but does the tower have bonuses for them and against you?

Someone with more insight might help you.

 nothing, no pop bonus.

second picture are the basic value of your troop...

First one is a battle situation... there is plenty of way to reduce health/defence/attack of a ennemy...

by example, if ennemy use the following scroll, your basic defense will be reduced by 35%

Now, there is some research too likebelow who can reduce a lot your statistic during combat

all the reducers value are only calculated during the attack since it is the reducer of your target who count...

somehow, it is like :

your base stat + your bonus - reducer of ennemy against his base stat + his bonus - your reducer

one more thing, not sure about it... but valkyrie value for defense/attack/health are never reported in battle statistic

and for some data, 100% don't mean 100%... in some case, 100% can mean half... 200% can mean 2/3... 300% can mean 3/4...