The P5020 is a recent design CPU; for most tasks it will probably be overkill. For CPU intensive tasks (for example 3D rendering) it may not be as great as the latest x86 but then when you're talking 10 hour render times, a ~25% difference isn't such a huge deal. Plus, much of this is moving to the GPU too (CUDA, OpenCL, Cycles render engine).
it's not 25%... its more like 500% compared to modern midclass x86.
Also, there is no SIMD so it would be even slower in compared to AVX optimized x86 CPUs that have up-to 256-bit wide vector units.
I guess my point is - the CPU is a significant (?) step up from the PA6T, it provides a future roadmap and will probably cost less than the X1000. Comparing a new gen Amiga to a PC or games console is pointless..
It's about 20-30% faster than PA6T, but uses more power. Also, PA6T has Altivec.