I think there are many good comments on this one - amazingly so since it has been vehemently argued back and forth for years already.
After re-watching a number of the games last couple days, I believe that Tommy Armstrong is in fact a very good (overall) QB and he still does have the potential to have a GREAT senior season filled with many very positive and exciting plays and outcomes. Will we have some bumps along the way? Without question. Tommy Frazier, Eric Crouch, Turner Gill, Jerry Tagge, etc all had more than their fair share of imperfect performances. Each had supreme athletic ability with each having a little more of this or that but as a package or set of skills, they had enough to win national titles and be among the very best ever to play for Nebraska and or anywhere. Tagge was more intelligent than gifted physically (not real fast, not real strong, not real special throwing, etc) but he was a superb decision maker. Crouch was lightning fast and tough and had the heart of of lion. Tommy Frazier was strong, quick, tough and determined to win. He was mostly 'a winner'. Tuner Gill was smart, quick, excellent arm, and confident and smooth as silk - a great distributor of the ball and game manager. Tommy Armstrong is most likely stronger than all of them (both in arm strength to make any throw and physically overall). He is much quicker than Tagge, comparable to Gill perhaps in speed and has a good dose of confidence, although at times it may be fleeting. When Tommy Armstrong is playing his very best, he can certainly be discussed as a part of this group of Nebraska's best. But, his lapses which result in ugly plays, turnovers, etc often overshadow his brighter periods. Many on this board insist I am far too optimistic, drowning in the 'kool aid' and so on but I do have a very hopeful and optimistic outlook as the summer days pass by. Tommy Armstrong may have all the records but the ones that count the most (championships and titles and big games and glory. You don't become a Husker Legend on statistics alone. You make the great plays in the great games to enable the team to win when it counts the most.
If Tommy Armstrong plays his best ball for his senior season, Mike Riley will enjoy the accolades as much as Tommy. Conversely, they both will suffer the wrath of Husker Nation should things go as they did last year. In this way, their fates are tightly joined.