Ryzen mobile is consistently close, yeah. But with the sole exception of the Steam deck, I've yet to see a Ryzen mobile-bearing laptop, Windows included, which is close to the overall performance of the Macbook.
"overall performance" does a lot of work here. On sheer benchmarks it's really comparable, with AMD being slightly better depending on what you look at. e.g. the M1 vs the 5700U (a similar class widely available mobile CPU):
They're not profiled the same, and don't belong in the same ecosystem though, which makes a lot more difference than the CPU themselves. In particular the AMD doesn't get a dedicated compiler optimizing every applications of the system to its strength and weaknesses (the other side of it being the compatibility with the two vastest ecosystem we have now)
Depends on what you mean by "overall performance", but my Asus ROG Zephyrus G14 2023 is full AMD, and outperforms my work issued top of the line M1 MacBook Pro from a few months earlier in every task I've done across the two (gaming, compiling, heavy browsing). Battery life is lower under heavy load and high performance on the Zephyrus, but in power saving mode it's roughly comparable, albeit still worse.
Same here, my G14 and the M1 MBP are pretty much interchangeable for most workloads. The only time then G14 starts fans is when the 4070 turns on... and that's not an option on the M1 at all.
Uuh wut? The Steam Deck is like 3-generation-old hardware in mobile Ryzen terms. In a lot of ways it's similar to a pared-back 4800u with fewer (and older) cores, and a slightly bumped up GPU.
To me it's kinda the opposite. Excluding the Steam Deck, I think most of AMD's Ultrabook APUs have been very close to the products Apple's made on the equivalent nodes. Even on 7nm the 4800u put up a competitive fight against M1, and the gap has gotten thinner with each passing year. According to the OpenCL benchmarks, the Radeon 680m on 6nm scores higher than the M1 on 5nm: https://browser.geekbench.com/opencl-benchmarks
Even back when Ryzen Mobile only shipped with Vega, it was pretty clear that Apple and AMD were a pretty close match in onboard GPU power.
Steam Deck might be behind in terms of hardware but in terms of software it's way beyond your typical x86 linux system power efficiency, and dare I say it's doing better than windows machines with the typical shoddy bioses and drivers, specially when you consider all the extraneous services constantly sapping varying amounts of cpu time. All that contributes to make the SD punch well above its weight.
My Alienware M15 Ryzen edition gets 7-8W power consumption by just running "sudo powertop --autotune". Basically all of the power efficiency stuff in the Steam Deck apply to other Ryzen systems and are in the mainline kernel.
https://www.cpubenchmark.net/cpu.php?cpu=AMD%20Ryzen%207%205...
https://www.cpubenchmark.net/cpu.php?cpu=Apple+M1+8+Core+320...
They're not profiled the same, and don't belong in the same ecosystem though, which makes a lot more difference than the CPU themselves. In particular the AMD doesn't get a dedicated compiler optimizing every applications of the system to its strength and weaknesses (the other side of it being the compatibility with the two vastest ecosystem we have now)