The high end AGM manufacturers like to list a Pulse Cranking Amps figure rather than the Cold cranking amps, since most vehicles crank for no more than 5 seconds.
CCA figures of Odyssey and Northstar AGM's are quite high, meaning they should support higher voltages for longer.
Lifeline is deep cycle AGM king with thicker plates and slightly lower CCA figures.
My Northstar when new spanked my engine to life so fast it was scary. Faster than 2 group 27 marine batteries in parallel could when new.
This scary fast factor is not what it once was at ~ 450 deep cycles and 3 years of age, but is by no means slow.