I know direct comparison is hard, but if we look at the GPU of M1 only, some of the claims make sense.
Also:
| Apple M1 (8 Core) | GPU | Intel UHD Graphics 630 |
| 1.80 GHz | GPU frequency | 0.35 GHz |
| 3.10 GHz | GPU (Turbo) | 1.15 GHz |
| 1 | GPU Generation | 9.5 |
| 5 nm | Technology | 14 nm |
| DirectX Version | 12 | |
| 3 | Max. displays | 3 |
| 128 | Execution units | 24 |
| Shader | 192 | |
| 8 GB | Max. GPU Memory | 64 GB |
| 16.00 MB | L2 Cache | |
| L3 Cache | 12.00 MB |