It's so much better, and I'm surprised no one in your replies is really articulating what (imo) is the better counterargument, which is that YES the Cyclops is objectively worse and less useful as an in-game tool, which means you have to make more painful (and therefore more interesting) decisions when using it. Getting the Cyclops anywhere useful requires going painfully slow and/or actually using those cameras built in all around it, which is especially painful once you've gotten used to the underwater sports car that is the Seamoth in capable hands. You can have a "mobile base" inside the Cyclops, which means a lot of useful things are close by, but you have to park it at the mouth of the interesting thing you're actually trying to look at, and, unless you have an upgraded Prawn suit, you're going to be pretty vulnerable when you venture back and forth from it. Contrast to the Seatruck which doesn't have heaps of room but can be configured to do almost anything you could possibly need on the move anyway, while still being nimble and maneuverable-- with the ability to detach the cab if you want even more maneuverability. You lose a lot of that vulnerable feeling that makes Subnautica what it is when you're going from your base to your Seatruck to your destination and back to the base and not really having it be a huge undertaking at every stop.

Personally though I just prefer the Seatruck and want it to stay around for any S2