I'm not sure about Paris.
There were very clearly multiple Parises, as is true with any large capital city. The level of petty street crime was appalling, the public transport was hard to navigate and even more inconsistent than London's, and the all-pervasive smoking was a bit of a shock! But the diversity of the eateries was fun, the architecture was remarkable and there was the sensation that you have to change your mindset for Paris to work for you. London and others open up to you, not Paris. There's something much different going on here - I wonder what it is?