No, I love Superman, especially Kingdom Come Superman.
A point I'd like to make is that Captain Marvel's clearest disadvantage against Superman seems to be his relative inexperience/innocence. In the JLU episode where they're fighting over Lexor City, Superman clearly gains the upper hand well before the fight ends and I think that that is because he shows greater skill in simple fighting. He starts to get more hits in and, to me, it comes across as greater experience in a slugfest.
That being said, the one fight that stands out the most for me is the Spear of Destiny CM in All Star Squadron #36 decisively beating Supes and humbling him. This is a CM that isn't suffering from his young, innocent, and inexperienced mind. This CM pwns Superman and even Batman and Wonder Woman are shocked. If you read the issues then you know all this. To me it is the most decisive win in their entire rivalry. Superman may have come out higher in the ultimate tally score, but the reality seems to me to be that Captain Marvel could win more times than not if his heart was really in it.
Seriously, did you read all of these issues? This write up is accurate as hell.