I'm trying to figure out why they had to add "ignores hindering" to AVAS hulk 64 on his movement special power?

HULK HATES WORLD: Hulk can use Charge. When he does, he doesn't halve his speed value and can use Improved Movement: Ignores Hindering Terrain, Ignores Blocking Terrain and destroys blocking terrain as the character moves through it, Ignores Characters.

I get the "ignores blocking" because with "great size " you only ignore outdoor blocking, but you ignore hindering with great size. Am I missing something? Does Great size only apply when it's a move action not a power action like charge because that's not what the pac says.

IMPROVED MOVEMENT
A character with the "improvement movement" symbol uses the effects indicated by the character card. Improved movement is activated whenever the character an action to move.

Charge
Give this character a power action; halve its speed value for the action. Move this character up to its speed value...etc

Reads like improved movement still words because doesn't require a move action but an action to move which charge does.

Any help?

Pym particals, Ant-Man, Mr. Mxyzptlk, etc. Lose your giant size, but keep your IM.

Ok. Makes sense.