The chords are different, but the only functionality missing from the other OSes are predictive text, text expansion, and skipping to the beginning/end of an entire text box. Are those the text editing features you're referring to or am I missing out on something more?

beginning and end of a textbox is huge. cmd basically acts as a home end key in windows. opt acts like word wise. there is another big difference is that cmd+up/down goes to the beginning or end of a window. there’s also the emacs bindings built into every standard text input area too. there’s more and a lot of nuance that i’m surely not describing well but those functions are top notch.