What I am reading is the "Will remove shields in" and "Will remove armour in" times, not any of the DPS values that don't seem to take into account multi-canon reload times, where the Will remove XXX in time periods might be.
I just tested a Krait II build again with 5 MCs overcharged 5 plus autoloader then switched one large MC to incendury rounds and both Will remove in times went up by 1 second.
I wouldn't trust Coriolis if that's the result you're getting. I just did the opposite and got a more sensible result.
Krait MK II, all multis G5 OC with incendiary vs a stock Cutter.
Time to remove shields: 11sec
Time to remove armour: 12sec
Switched one L MC experimental over to auto loader and the results were:
Time to remove shields: 12sec
Time to remove armour: 11sec
Which is in line with what you would expect from trading a bit of thermal DPS for kinetic.