I will at least agree that the sound mix on the 15/70 IMAX screening I went to was uncomfortably loud, and Bane's voice illicited a negative reaction from my ears similar to that from hearing microphone feedback.
Though to be fair, it wasn't as bad as the 70mm screening of Wrath of Khan I attended where they ran the print without Dolby Type A, and every phaser, torpedo, transporter and warp would peak the treble.
I remember TDKR sounding better in DCP. Maybe my IMAX venue jacked up the sound themselves?