High SPL won't damage the mics or other recording gear.
Consider the measured distortion figures as a guideline, and little more than that. All reference a 1kHz testing frequency. Generally, distortion will increase to higher levels at lower frequencies, and SPL of most amplified concerts such as this will be highest at low frequencies. Also, SPL decreases dramatically with distance from the source, so SPL will be orders of magnitude higher 1' in front of the PA speaker than out in the room. Also, even if the microphones are not significantly overloaded, following portions of the signal chain can be overload. For all these reasons, its difficult to make a recommendation other than to use the ATs if you can, especially if the CA-14 are omnis (making them more sensitive to low frequencies which are likely to represent the highest SPL).
I hope they make disposable earplugs available to anyone who wants them.