I'll say it again, but the lessons we should have learned with GameCube clearly weren't learned.
GameCube CPU: 485MHz, FPU 1.9GFLOPs
GameCube GPU: 162MHz
GameCube RAM: 43MB
PS2 CPU: 294MHz, FPU 6.2 GFLOPs
PS2 GPU: 147MHz
PS2 RAM: 32MB
Xbox CPU: 733MHz, FPU performance unknown
Xbox GPU: 233MHz
Xbox RAM: 64MB
At the time of their comparison in 2001, GameCube was labeled "garbage-tier" compared against the Xbox and just barely better than PS2, with its floating-point performance being regularly singled out.
And we all remember how things panned out that generation: PS2 was the weakest, naturally, but Xbox wasn't this massive unparalleled technology leap compared to any of them. How every component works with the total package in real-world performance is the only way to measure a console.
Nintendo clearly demonstrated its design philosophy, a philosophy that always gets overlooked because it's not something you can use as bait when trolling: Optimal RAM and cache for fewer wasted CPU/GPU cycles. I don't expect Switch to be any different in that regard. How optimized the design is as a whole will be the question, but as always, we'll have to wait until January to know for sure.