There are definitely a lot of rumors, but it's important to separate raw specs from architectural context. The PlayStation 4 Pro is a 4.2 TFLOPs GCN-based console with 218 GB/s bandwidth and a 150W+ home power envelope. That's a fixed living-room machine from 2016.
Switch 2 is a modern, highly efficient SoC built on a much newer architecture, with access to contemporary features like advanced reconstruction techniques and significantly better perf-per-watt. Even if raw compute numbers don't match PS4 Pro on paper, architectural efficiency and upscaling tech can narrow the real-world gap in specific scenarios.
So "as powerful as PS4 Pro" depends on what you mean. In pure raster TFLOPs, that's a high bar for a portable-oriented system. In perceived output at 1080p or reconstructed resolutions with modern techniques, the comparison becomes more nuanced.
The real question isn't whether it matches a 2016 mid-gen refresh in raw throughput. The question is what it can actually deliver on screen, consistently, within its power constraints. That's where modern design matters more than a single number.
Edited : Yes, that quote is from Tom Warren, but it was an off-the-cuff comment about rumors, not a hardware analysis. The phrase "as powerful as" is also doing a lot of heavy lifting there. Console performance isn't a single scalar number you can compare in isolation. Architecture, node efficiency, feature set, memory configuration, power envelope, and reconstruction techniques all matter. Reducing it to "as powerful as a PS4 Pro" oversimplifies a pretty complex discussion.