Not quite.
Obviously, Google Analytics is deduplicated, while Google Ads is not. Whether this is an upside or a downside depends on lots of factors, it can be both.
Beyond this, many functionalities are exclusive to one side or the other. (Enhanced Conversions, for instance). A discussion of this would go way out of bounds, there are a ton of factors to consider.
Finally, if you are in Europe, or bound by other privacy legislation, there are differences in both the requirements for user consent and the modeling / extrapolation possibilities if you don’t get it.
So it really depends.