Depends if you mean reading office documents or creating them - for reading them (plus email, social media, internet) iPad is fine. For creating them, the MacBook (the Air even, would do the job better in my opinion, no need for the pro really) - main difference, better keyboard and angle-able screen and no screen touch input, simple as that.
I have an old 2012 15” MacBook Pro, and a 2017 iPad Pro 12.9” - and I’d still work on an office document on the MacBook with keyboard every single time using the “full” version of office apps using the touchpad over the touchscreen iPad any day (even with an add on keyboard). But for everything else I use the iPad, it is more convenient and easily powerful enough now it has the M1 processor - especially watching any media content.
No doubt you’ll get many different views, however 😉