I think that in principle it would take more than size and a heavy punch to defeat Marciano. If a fighter never really cut it at world level, then it is more than reasonable to bet against these attributes.
Rocky would destroy him. Price doesn't have the mobility, ring sense or reactions to deal with Rockys pressure. Unlike every single opponent Price has faced, Rocky is a world class boxer who knows how to make a fight. Price can't make a fight. What's he going to do when Rocky boars in with 20 overhand rights and big hooks on the inside, constantly pushing with his weight, moving his head. Price can't move his arms or legs fast enough to do much against that. He'll go into a shell before round 1 is over. Rocky KO 2
Rocky was giant slayer http://www.walesonline.co.uk/news/wales-news/boxer-proves-welsh-archives-biggest-2173814
Price is a nice guy with a real right hand punch but that's it, unless he could catch Rocky cold with a big one as soon as the bell rang he is getting stopped here.Last night's result emphasises this!