Between the Nebula Cosmos Laser 4K and W5800, the Nebula Cosmos Laser 4K comes out ahead in several specs, while the W5800 wins on brightness. Overall, the Nebula Cosmos Laser 4K scores 70.7 and the W5800 scores 73.9 on our Mars Score.
Which should you buy?
The W5800 edges ahead on the Mars Score (70.7 vs 73.9), but the 3.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Nebula Cosmos Laser 4K doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the W5800 if you care most about brightness. Its strongest claims are brightness.
Both ship with comparable resolution, light source, short-throw, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why Anker - Nebula Cosmos Laser 4K wins
- No decisive advantages.
Why BenQ - W5800 wins
- ▲Brightness — 8.33% more. 2600 lm vs 2400 lm.
Spec comparison
Image
| Spec | Anker - Nebula Cosmos Laser 4K | BenQ - W5800 |
|---|---|---|
| Resolutionⓘ | 4K | 4K |
| Brightness | 2400 lm | 2600 lmlead |
| Contrast | 2200:1 | 2000000:1 |
| Light source | Laser | Laser |
| Short-throw | false | false |
Smart & Connectivity
| Spec | Anker - Nebula Cosmos Laser 4K | BenQ - W5800 |
|---|---|---|
| Smart OS | Android TV | None |
| HDMI inputs | 1 | 2lead |
| Built-in speakers | truelead | false |
Frequently asked
Spec-level deep dives
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