Is it possible to use rooting method of a device on a device having same model number yet different baseband number
Rooting methods are often device, device variant and OS specific (though some work across device-boundaries). In your question both devices are the same except PDA which is same but with minor variations – I couldn't find the exact difference on internet
Baseband has nothing to do with rooting process . See What does &quot;to root a phone&quot; mean? and How does rooting work?. So you are perfectly fine adopting the same rooting process
If you plan to stay with stock OS, there is nothing to be concerned about. If you decide to flash a custom ROM, use ROM specifically meant for your device variant -custom ROMs usually do not touch bootloader , modem and other low level stuff and write to /system