While there is tons of nice place/stuff to do in Paris, many people see it as a perfect, romantic, ideal whatever city, and a visit there the trip of a lifetime.
Paris is a 10 million inhabitants urban area with all the associated problems,
Imagine thinking you’re in the perfect city and being stuck in a crowded train, then in traffic, and falling in any possible tourist traps, from the barely legal but legal low quality, high price restaurant to the pickpocketsand other petty crime
Went to Europe for my honeymoon and Paris was the first stop since the wife hadn’t been to Europe. She thought it was dirty and underwhelming.
A nice city to see for sure but for sightseeing and museums. Felt like New York City in a way.
It is a good comparison. There is a lot to see in both cities and they have good transit systems, but it can be really disorienting if you aren’t used to city life and the grime of cities is harder to hide.