Powershell is so much more than bash, not in a derogatory way.
It’s a full fledged object oriented programming language, and it’s written in .Net I believe. You can integrate tons of plugins to manage your whole infra (exchange, Cisco, AD, VMware etc), just from the Powershell shell.
I hate it because it’s slow, clunky and overly complex for its prime use, which is scripting.