Gameplay Cameras setup: Spring Arm migration and mismatched values

Hello everyone! I have a few questions about setting up Gameplay Cameras.

I’m migrating my setup from a Spring Arm, but the camera position doesn’t match. Do I need to use an offset?

Also, what is the Boom Arm node for, if Dampen Position already handles camera lag, and Push Collision handles moving the camera closer when something blocks the view (I’m not sure what the proper term for this is, hopefully it’s clear what I mean)?

The values for the camera limits don’t match either.

The XY multipliers also behave differently: a multiplier of 1 in the Scalar modifier is very fast, while 1 in the Gameplay Camera settings is extremely slow.

Any help would be appreciated. Thank you!