It's not even on the same level. Container tabs as the name implies are all in the same window, and you can program them, for example always open up google.com domains in my Google container, while opening amazon.com in my shopping container.

This keeps the cookies separate and means you are tracked less. Yes you can manually do this with Chrome profiles, but before this feature was introduced into Firefox I had a dozen or more Chrome profiles to keep all my work, community and personal Google/Microsoft logins separate.

And then you can use specific proxies (via your VPN) per container, it's a game changer for consuming media

With profiles can you use the same window for multiple tabs? Based on a video I saw, the entire window is only used for that profile and switching between profiles will lose your other profiles tabs.

Can you have each tab use a different browser profile?

I wish they improved the UX so that it is as easy as possible to switch between profiles and to always launch certain websites on isolated profiles that you set for them