what size is the Blood wars hammerer

I was wanting to know what size is the blood war hammerer. If it was medium or large?
It was a medium base, althought the figure itself is a little large and is unstable on the base. It tends to fall over when the table gets bumped.
Thanks, I was looking for a miniature to substitute for a huge amalgomation, i guess this camparison is laughable. does anyone have any suggestions
 

Warforged Titan (#65 Giants of Legend)
or
Iron Golem Juggernaut (Lords Of Madness: 23/60)