How did the romans differ from greek on art that shows the human body

Romans did perspective paintings. 
Greece was more on objects then on walls or canvas. 
Greeks were very quadrangular and blocky. But had lots of shapes. 
More Natural and pictures/ paintings were based on what they saw with there eyes. 

With human scultures of the human body they were very similar. 
Romans was a little finer like on the edges and more tools and that they could work with. 
Greeks were a little rougher but still quiet amazing.