There is a lot of misunderstanding in this post.
Many recruits do not earn their rankings for what they do during the course of a HS season. They earn their rankings at camp circuits where recruit analysts get to lay eyes on them. Sure, Jace came from a small Kansas school but he camped in many places to include Nebraska, UNC, Florida State, Oklahoma State, Kansas State, among many others.
https://www.tallahassee.com/videos/sports/college/fsu/football/2017/06/15/watch-three-star-qb-jace-ruder-fsus-jimbo-fisher-camp/102877470/
Second, his career at UNC has ZERO to do with Jace's potential. Jace committed to Larry Fedora after his successes with Marquise Williams and Mitch Trubisky but Larry had a very old school and outdated approach to playing Freshman that simply has no use in today's CFB when so many Freshmen are coming in prepared both physically and mentally to play from the start. It became the ire of many UNC fans when we knew both Ruder and Fortin were better than Elliott but Fedora kept trotting Elliott out there. Ultimately, it became Fedora's undoing.
When Fedora did finally give Jace his shot that Freshman year, the team was heavily injured and mentally defeated and yet still Jace provided a spark until he took hits he shouldn't have taken. Ultimately both Jace and Fortin ended up with season ending injuries, culminating a year when UNC likely had more season ending injuries than any program in the country. It was criminal how BAD our Strength and Conditioning program and how much more improved Mack made it. You can read a little about that here:
https://www.si.com/college/unc/football/heels-feeling-good-after-camp
None of the stats on paper are an indictment of Jace's ability. He is absolutely still a dual threat. Heck, I proposed among Heel fans that he make the transition from QB to LB like Chazz Surratt did, who after making the switch has played himself into a 2x All-ACC LB and a surefire NFL draft pick this season. They both have nearly an identical frame, athleticism, etc.
The bigger picture here is that Jace is coming off his healthiest year yet and stands to be the most athletic and physically imposing QB you'll have in that room, at 6-3" nearly 230lbs, with 4.5 40yd speed.
Jace just had some bad luck in Chapel Hill with a bad Head Coach his first year, 2 season ending broken bones in year 1 & 2, and then Sam Howell coming in and taking the CFB world by storm. Jace is brining a magnificent skillset to Denton and I fully expect he is going to play tremendously.