What should be the Real-world Access Speed on a Mac mini M2 Pro's Internal (integrated) SSD Drive?

What should be the Real-world Access Speed on a Mac mini M2 Pro's Internal (integrated) SSD Drive?

The 2023 Mac mini M2 Pro specifications state that it has a 200GB/s memory bandwidth.

When I run Disk Speed Tests on my 2023 Mac mini (13.6.1) M2 Pro's internal (integrated) 1TB SSD I get the following results.

-> BlackMagic Disk Speed Test: 5789MB/s (~5.8GB/s) Write and 5042MB/s (~5.0GB/s) Read

-> DiskMark 2.3 Speed Test (sequential) : 3777MB/s (~3.8GB/s) Write and 4824MB/s (~4.8GB/s) Read

If my conversion is correct, the Disk Speed Tests are no where close to the stated speed of 200GB/s.

If I am thinking of this incorrectly, please clarify what is happening.

Thank you, in advance, for your time and assistance.