Dell r540 server firmware and driver updates using LifeCycle Controller vs Server Update Utility

Coming back to the admin industry after a long break and managing a more dated r540 with an iDrac running Windows Server 2016 there was a need to update the machine to latest firmware and drivers.  Dell support states to use the Server Update Utility, LifeCycle Controller or individual DUPs.  After downloading the latest SUS, mounting and running the suslauncher, results show a noticeable discrepancy between latest and available software versions for several components.   We also could not update much past 2023 patches.  The SUS appears to be wildly outdated or returning incorrect results? Ultimately, we decided to use the LLC to patch everything with success.  Following up with an SUS check, it is recommending now that we downgrade several components, while the LLC is reporting great results and currently available versions installed.  The server is running ok with the new updates.  Looking for some help in understanding whats going on here?  Thanks for any advice.