Heavy Tank Armor skill

[Gammagulp]

This Skill has a minimum damage of 20, but at level 5 maximum reduce creep and tower damage by 100.

Sounds quiet much to me, but the big creeps at level 5-6 can deal 170 or even more damage. The cannon tower later deal 350 maybe and maybe the guards creeps with damage aura from the commander units deal 630+63 at a certeain level.
(even over 1000damage in the end)

So this armor skill ist quite good for anti laser tower and anti marine fighting, but laggs a bit for bigger creeps or cannon towers.
That skill dont reduce magical damage from weapons i suppose, right ?

So I want to ask what the others think of a suggested change from minimum 20 damage to minimum 40 damage and therefore double the ammount of blocked damage.

At level 3 for example you could block 120 damage - but receive 40 damage minimum. So is a bit more useful against bigger creeps and cannon tower but couldnt block the whole damage - maybe you receive even more damage as 40 even if you level that skill.
(The heavy tank then gets a bit useful resistance against ghosts and treants of the guard and ghost tank, too)