Exactly, these kinds of comparisons are essentially meaningless without a realistic matching cpu.
If you pair a low-end GPU with a low-end CPU, then how do you know which one is limiting your performance, & what kind of inexpensive upgrade would give you the most boost?
Techspot, Tom's Hardware, & all of the reliable testing sites have had to reiterate this for years:
-- to eliminate GPU bottlenecks when testing CPU performance, you test all of the CPUs with
the top-end GPU available at the time of testing.
-- to eliminate CPU bottlenecks when testing GPU performance, you test all of the GPUs with
the top-end CPU available at the time of testing.
That way, the
ONLY bottlenecks that show up in the test results will be due to the GPUs themselves -- the generation of card, the amount of VRAM, its core/processor count vs. other chips of its same generation & maker, etc.