I should have worded it a little different. If you look at the battery it says 1.2 V on a Ni-cad, 1.25 V on your NiMh. That's what it says. If you actually test them, you will get a higher reading. Yes, around that 1.4? volts. The Ni-cads will not give you the same results.
This is why my radio reads 11.? volts. You'll get a little difference in each and not the full 12 volts. But it will operate the radio fine, because it can hold that voltage for a longer period of time than your Alkalines.