Hunt was a noticeably worse grappler and worse wrestler back then by a wide margin. Fedor just didnt even train for that fight because he broke his foot/toe while hunting a few weeks before the fight and didnt take it very seriously and Hunt surprised him a little bit.
Hunt only became a good grappler when he moved to the US and was training his wrestling with ATT and was promoted to brown belt in BJJ under Ricardo Liborio.
His grappling was terrible before then. Just caught a sleepy, lazy goat but surprise.