The Indian wrestlers finished with 10 medals, including a gold, five silver and four bronze, bettering their tally of nine medals in the last edition of the Asian Championship at Bangkok, Thailand.
In men's freestyle category, Iran defended their title, while Japan and Uzbekistan finished second and third respectively.
Sumit, making a comeback to the international circuit after seven months having recovered from a back surgery, could not pose much threat to his formidable Iranian opponent in his gold medal round, losing 2-6 to settle for the second position.
The Indian once again managed to grab the Iranian leg but failed to capitalise on the advantage as Mohebi push Sumit down on the mat to bag two points before finishing off the opening round with two more to lead 5-2 at the break.
Also Read
In the second half, the Iranian gained one more point even as Sumit failed to make a comeback and lost out on a gold medal.
"Yes, it was difficult to make a comeback initially after the surgery but I practiced hard and did not face any problem fighting here," said the 24-year-old Indian.
Earlier, Sumit showed his mettle on his way to the final as he faced little difficulty in overcoming his opponents during the quarterfinal and semifinal bouts.
In his first bout of the day, Sumit beat Taiki Yamamoto of Japan 6-3 in the quarters and then outplayed Farkhod Anakulov of Tajikistan 7-2 in the semifinal to reach the gold medal round with consummate ease.
Harphool went down fighting 6-7 to Rei Higuchi of Japan in the quarterfinal round to crash out of the tournament.
The Indian wrestler though did well during his qualification bout, thrashing Divoshan Charles Fernando of Sri Lanka 11-0.
Vinod Kumar Omprakash lost to Japan's Momojiro Nakamura in the quarterfinal of men's 70kg.
Somveer bowed out of the competition after he was handed a 0-11 defeat by Gwanuk Kim of Korea in his qualification bout.
Disclaimer: No Business Standard Journalist was involved in creation of this content