I don't know if it has been established what level Barrel Springs is at now, but if you have run Barrel at 2000 (Class 5 level according to C&C I think) and Kirschbaum at 1000 - 1200 (typical good levels there), and you think Kirschbaum and Barrel are comparable at those levels, then I think someone played a trick on you and showed you the wrong lines to run in Kirschbaum.
But seriously, in a little boat, I am practically lost in a tumultuous sea at 2000 cfs in Barrel. At 1200, Kirschbaum in Gore Canyon is a fun little scooter ride that I wished lasted longer. Also, I have found sticky holes in Barrel. I have not been trapped in Kirschbaum (yet).
But I do agree with your recommendation, take advantage of Gore Canyon while you can.
See you out there this weekend maybe.