MS Word comes with a full powerful and rich feature set, Recent versions support collaboration too.
G- Docs is minimalist, designed with collaboration in mind. Not really powerful with formats, themes and design.
Excel supports advanced formatting and scripting options, macros and is a very powerful tool.
G-suite's sheets on the other hand has basic spread sheet functions with simple mathematical functions. Chat windows to discuss collaboration in real time is the only positive feature in comparison with excel.
For presentations, Powerpoint is an all powerful tool. Media integration is robust where it supports playing media files locally and online on various platforms like Youtube, facebook. Formatting options, templates and design capabilities are very rich. It is the goto tool for powerful presenations.
On the other hand Slides, Native Youtube Integration helps to play videos during presentations. It is easy to use with limited formatting options. Needs to be online, definitely not as powerful as powerpoint.