I have to say, this is my least favourite iteration of the Siegfried plate armour. Yes, he looks overtly thick and wide. They've clearly veered too much towards this thing a lot of video games do where plate has to be super bulky with huge unnecessary lumps on shoulders and waist etc. which make people in plate look like space marines.
I also particularly dislike the bare skin showing where there should by all logic be mail or at least cloth (as in all past games). It looks like he's wearing a suit of armour put on top of nothing, which is ridiculous and looks stupid.
And yes, I know Soul Calibur 4 had him wearing a completely fantastical crystal armour, but even that looked better and had mail in places without plate.
I'll still play him, but I'm disappointed by the design. Hoping for a better secondary costume.