Mr Macklin said there were no eye witnesses to the encounter, nor CCTV footage, therefore it would be a simple case of who the jury believed.
He said the woman's evidence would show she struggled, cried out and tried to get away and that Smith ripped her pants from her body. He said she was found in a distressed state afterwards by people who called police.
Smith's lawyer, Louis Te Kani, said his client "vehemently" denied the charge against him.
"It's not rape, it was consensual sex," he said.
Mr Te Kani said two people had given statements they believed the pair were going to "hook up" on the evening in question.
He said Smith would not take the stand as he had already been interviewed twice by police and a DVD of his statement would instead be played to the jury.
The trial is expected to finish today.