The Apple Macbook Pro Mid 2012 has a better storage medium than most MacBooks that came out around the same time as it. This notebook PC has an HDD storage medium, whereas most MacBooks that have been around for around the same time as it have an SSD storage medium. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.
An HDD storage medium is actually the worst storage medium across all laptops of this age and type.
Across similar types of portable PC the best storage medium is SSD.