OK, so that's patently not true. He was the best HS QB in OK...that's not questioned. Him being the entire offense...not true, especially last year and the year before (this year, after Waite was shot, he certainly was most of it). He's had some great RBs at Union and the OL (before this year) were actually pretty good. Grayson Tempest and Jino Boyd and Lane Wood (TE) were all better than your avg. HS WRs and created mismatches for every defense. Add to that Carrasco and teams were just not equipped to deal with Union's skill players. And it's pretty easy for a QB to throw to wide open receivers.
This season was definitely different. While the RB tandem was excellent, the WR room after Jarek Waite was injured and couldn't play anymore, was definitely limited, and in turn, brought out some of Reisig's limitations. And let's be honest, Reisig forces a lot of throws to receivers that aren't open. The losses in the playoffs the previous 2 seasons revealed this.
This year Union just wasn't very good comparative to Owasso, Jenks, and Bixby. The defense lacked speed and the DL wasn't stout enough to contain the run and it exposed the LBs lack of athleticism/speed. The OL wasn't great and not having the WR who could stretch the field, it allowed the D to play closer to the LOS and limit the underneath stuff. Against the good teams, Union simply wasn't capable of creating explosive offensive plays.