Also not true. The SNES is much more powerful than the PCE.
Unless you think graphics effecs/colors equal power, I think not.
The MegaDrive CPU is the exact same model from 1979 version - no changes. While the CPU is actually
internally 32bit with 32bit arithmic functions, it fairs less then 1.2 MIPS. It has its strengths, but also has
many weaknesses. Depending on what your using it for, its slightly faster or slower than the PCE's Huc6280 (1.4 MIPS). Example, the Huc6280 can increment a value in memory in just 6 cycles with a single instruction( 1 byte), while the MC68000 take much more cycles to execute and multiple bytes for each instruction. Huc6280 code is smaller in size in comparison to the MC68000, therefore taking less space (about 2.5-3 times smaller). The MC68000 does have powerful functions, that are not practical or useful for console gaming code.
The SNES CPU is slower in performance than the PCE and the MD.
System strengths-
MD - The FM chip, 2 plains of backgrounds, linear memory address mode, fast cpu, 64k of ram, most games ran in 320x224
SFC - Sony SPC music chip(board), hi-color palette, rotation/scaling, 4 background layers
PCE - Very fast CPU, very fast VDC, 481 colors on screen without any tricks, up to 64x32 sprite size, three resolutions 512,320,256, fast video DMA.
System weaknesses-
MD - PSG(ugh!), only 64k of vram for the two background maps(planes), larger CPU code, 61 colors onscreen - only 30 for sprites
SFC - slow CPU(3.58mhz) - runs even slower when accesssing slow rom(2.68mhz), only 64k for all 4 background planes and sprites( should have been 128k atleast!), non-linear address mode, games ran in 256x224(200) res to save on vram usage
PCE - only 1 background plane - no tile flipping for background map, only 8k of system ram, 256pixel sprite limit for 320 and 512 resolution mode, no FM chip(IMO), non-linear address mode