battle stats

noticed when checking the battle stats, it gives all the units used and their att/def points, any possibility that at some stage it could show total points for any given attack?
How do skill points equate on the attack defence, say compared to buying a big hitting unit on the marketplace?

Showing total attack / defense points for each item category (or as a general total) is totally doable, but whoever has the biggest total points may not be the winner of the fight and that is because of the attack / defense points. Attack / defense points act like a boost on your item total points, being also influenced by your level.

In order to increase your total strength in battles, you should invest in both:
1) item attack / defense points - better items increase your base of attack points
2) profile attack / defense points - more points means a higher increase of item attack / defense points. Also keep in mind that you should increase your attack / defense points with every level up - the same number of attack / defense points will act different on different levels.

Having either one of the above neglected will probably result in a weaker attack.
Investing in both of the above will lead to a better strength in battles. You will have to decide what to increase first or more.