A standard PS2 ISO of SvR 2011 is roughly 3.2 GB. While that isn't massive by modern standards, many retro gamers use low-storage devices like USB drives for their emulators (PCSX2), old Android phones, or even modded PS2s with small HDDs. A "highly compressed" version reduces that file size to anywhere between 300 MB and 700 MB.
In the context of PS2 ISOs, "exclusive" usually refers to a community-modified version. These aren't official, but they are "exclusive" to certain retro forums. Often, these rips include: A standard PS2 ISO of SvR 2011 is roughly 3
Download the latest stable build of PCSX2. Do not use the ancient 1.4 version; use the Nightly or 1.6+ versions for better compatibility. old Android phones