I can't compare to PowerShell, I've only ever used the Mac version of Warp (the Windows version is relatively new, I can't attest to the quality)

To be more specific about what I was saying, on Mac, in any standard text field I can hold Cmd and hit left or right to jump to the start or end of a line, or hold Option to jump a word at a time, and if I hold shift it'll select text. Option-delete deletes the last word, etc.

I've managed to get iTerm2 to do a lot of this stuff but, for example, Option-shift-left, instead of highlighting the last word, spits out the text ";4D"