"That can't be all right?" One of dual blades men asked a frown on his face.
Guillimans describtion of his strength was very vague, they could understand why Victoria would be vague, but he was but a slum rat like the rest of them.
What was hiding going to do for a trash aspect?
Of course, he had no idea that even the so called 'vague' explanation from Guilliman was laced with lies. Bind willingly? Guiliman didn't bind with anything, he forced their souls to submit to his authority.
If these guys knew this they would naturally be curious as to how he was able to force beasts to submit. so he said it in a way to make them think he could only bind with tamed beasts.
There were also other parts of his aspect that he didn't even bother mentioning. The people in this shelter even these so called great families didn't seem to understand aspects to the extent even so he kept most to himself.