The energy armour is directly superior, being armour and all.
However, the statue is better in utility. Not only does it have special effects, but is not limited to the statue form. It is, at its foundation, Wood Style, which is a pure element that can be forged in many ways. The armour, on the other hand, is pure armour and cannot be used or moulded into anything else. It would be worth more if the pure energy could be shaped into anything, similar to tailed beast energy cloaks.
Overall, the statue is superior. Having it means having access to all of Wood Style with all of the other usages it carries.