Salvatory repentance is conceding who we are and who He is. Christian repentance is a continuous process - and in this respect I agree.
It takes belief, or as you say "conceding," but it takes more than belief. It takes faith. For Latter-day Saints, faith includes
For many Evangelicals, it seems faith includes works, but you can't call them works.
On a trip to the country of the Gaderenes, Christ and His disciples encountered a man possessed of evil spirits calling themselves "Legion." The unclean spirits recognized Christ; they even believed in Him:
And when he went forth to land, there met him out of the city a certain man, which had devils long time, and ware no clothes, neither abode in any house, but in the tombs. When he saw Jesus, he cried out, and fell down before him, and with a loud voice said, What have I to do with thee, Jesus, thou Son of God most high? I beseech thee, torment me not. (For he had commanded the unclean spirit to come out of the man. For oftentimes it had caught him: and he was kept bound with chains and in fetters; and he brake the bands, and was driven of the devil into the wilderness) (Luke 8:27-29).
Christ cast the demons out, they took up the body of pigs, which quickly ran to their deaths. Their belief in the power of Christ- they specifically demonstrated belief in His power by requesting to be allowed to enter pigs,- was not faith, it was just belief, acknowledgment. Even sure knowledge isn't faith.
Brigham Young explained:
A great many say, 'I believe the Gospel,' but continue to act wickedly, to do that which they know to be wrong. I wish you to fully understand that merely believing the Gospel, that Jesus is the Christ, in the Old and New Testaments, that Joseph Smith was a Prophet sent of God, and that the Book of Mormon is true, does not prepare you to become angels of light, sons and daughters of God, and joint heirs with Jesus Christ to a divine inheritance. Nor does mere belief entitle you to the possession of the crowns and thrones that you are anticipating.
No, such preparation can be made, and such objects attained only by doing the work required of us by our Father in heaven, by obeying Him in all things, letting our will, dispositions, and feelings fall to our feet, to rise no more, from this time henceforth, and actually operating upon the principle that we will do the will of our Father in heaven, no matter what comes upon us. Then, if you are going to be killed by your enemies, or destroyed by the adversary, you can say, 'Kill away, destroy away,' (Brigham Young, Journal of Discourses 2:248).
Belief and acknowledgment didn't help the unclean spirits any more than it would help us to believe without having faith. Faith leads to action; that is what faith is: belief unto action.
James was explicit on the matter, even mentioning the belief of demons not being true faith:
Even so faith, if it hath not works, is dead, being alone.
Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew thee my faith by my works.
Thou believest that there is one God; thou doest well: the devils also believe, and tremble (James 2:17-20).
The main object of Brigham's comments was that belief doesn't equal faith. Even the demons tremble. But they never had faith unto repentance, and that makes all the difference.