Proud owner of the briefcase hitbox
I think the strength of the tiara throw is actually the ability to lead into an airdash mixup.Lol...I just can't help but think you assume an armored wall bounce is the end all/ be all for ALL situations at this distance. No. Sometimes you have to be crafty and throw different shit out there. In the heat of battle...yeah. I'm not saying this is the "go to tech"...but you have to be versatile...and it proves that the Tiara throw is FAR from useless.
As for the usefulness of that tech i'd need to look at the frame data but I'd suspect that the bounce will be the better option most of the time. It punishes the exact same read and is much, much safer. Mixup is important but theres no point doing a move that doesn't have any advantage over another in a certain situation.