Are you sure you are measuring the thermistors and not something else? Thermistors are in the tens of thousands of ohms (90K ohms is typical for my thermistors, but it varies a lot with temperature). Heater resistors are down in the range of ohms (between 3 ohms and 7 ohms, I think, depending on the model of hot-end).
To eliminate one possible source of confusion, measure resistances directly at the Azteeg terminals (screw terminals for the heaters, header pins for the thermistors). Leave it wired up, and reach in with your probes. It is safe to do this if you have removed all sources of power from the Azteeg; shut down the power supply, unplug the USB cable, and wait a bit first.
(This may be obvious to you, but might fool some people who don't have a lot of experience with electronics: If your meter has a range select switch, and you select the 200K ohm range, and the readout says 80.0, it's telling you 80,000 ohms...)