First, let's address the term "exclusive." In the context of this keyword, it usually refers to one of three things:
Unlike Little Big Planet 1 & 2, which were PS3 exclusives, LBP3’s PS3 port is often called the "lost version." It runs at a lower frame rate (30 FPS vs 60 on PS4) and lacks the "Create Mode" fluidity, but it retains the original voice of the community levels.
Graphically, the game is a marvel for the PS3. The textures remain soft, plush, and tactile. The lighting engine was upgraded for this sequel, giving the world a warmer, more dynamic glow. The "Bunkum" setting provides a diverse range of themes—from neon-lit futuristic cities to rustic, swampy marshes.
However, the resolution cap (720p upscaled) and texture pop-in are more noticeable in 2024 than they were in 2014. It still looks "good" in that distinct, arts-and-crafts style, but it is clearly a generation behind.
Before you rush to download a 20 GB ISO, understand the reality. Little Big Planet 3 on PS3 is a technical marvel... and a mess.