From those pictures I’m going to say you shouldn’t have a problem with those drivers. As long as the dent’s didn’t cause a separation between the cone and surround or the dust cap and the dents don’t impede the movement of the cone you should be fine.
Give them a listen and see if you notice anything. Keep in mind that if you can’t do a blind test as to which drivers you are hearing your mind is very likely to trick you into believing your hearing a difference.
An easy way to tell if the dust cap has become detached is to gently tap on it. If it’s not detached you will hear a dull thud. If it’s separated from the cone you should hear a higher pitched tapping/clicking sound.
