Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Anker - Nebula Cosmos Laser 4K | Hisense - PX3-Pro |
|---|---|---|
| Brightness | 2400 lm | 3000 lm |
| Short-throw | false | true |
Between the Nebula Cosmos Laser 4K and PX3-Pro, the Nebula Cosmos Laser 4K comes out ahead in several specs, while the PX3-Pro wins on brightness / short-throw. Overall, the Nebula Cosmos Laser 4K scores 69.5 and the PX3-Pro scores 74.3 on our Mars Score.
Which should you buy?
The PX3-Pro edges ahead on the Mars Score (69.5 vs 74.3), but the 4.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Nebula Cosmos Laser 4K does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the PX3-Pro if you care most about brightness / short-throw. Its strongest claims are brightness, short-throw. The single most decisive one: Brightness — 25.00% more. 3000 lm vs 2400 lm.
Both ship with comparable resolution, light source, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Anker - Nebula Cosmos Laser 4K or Hisense - PX3-Pro?
Hisense - PX3-Pro leads the current Mars Score by 4.8 points.The more useful decision is the trade-off behind that result: compare brightness, short-throw against the way you will actually use the product.
Choose Anker - Nebula Cosmos Laser 4K if…
Anker - Nebula Cosmos Laser 4K does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Hisense - PX3-Pro if…
Hisense - PX3-Pro has the measurable edge on brightness lumens, is short throw.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Anker - Nebula Cosmos Laser 4K wins
- No decisive advantages.
Why Hisense - PX3-Pro wins
- ▲Brightness — 25.00% more. 3000 lm vs 2400 lm.
- ▲Short-throw: true (vs false).
Spec comparison
Image
| Spec | Anker - Nebula Cosmos Laser 4K | Hisense - PX3-Pro |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightnessⓘ | 2400 lm | 3000 lmlead |
| Contrast | 2200:1 | 3000:1 |
| Light source | Laser | Laser |
| Short-throw | false | truelead |
Smart & Connectivity
| Spec | Anker - Nebula Cosmos Laser 4K | Hisense - PX3-Pro |
|---|---|---|
| Smart OS | Android TV | Google TV |
| HDMI inputs | 1 | 3lead |
| Built-in speakers | true | true |