Perhaps you can't decide which processor to buy, you can make a decision after reading the comprehensive test AMD EPYC 7702 Cinebench r15 score multi and single core and understand is it a good CPU or a bad one to buy, how powerful is this CPU. Here is useful information from Cinebench r15 benchmark. A careful analysis of all the specifications, to make it easier to understand, is summarized in the table. After looking at the data of all test and video, you already be able to know do you need to buy AMD EPYC 7702 or not.
All the number in the text above do not mean that taking them into account you should totally trust a simple comparison of these numbers. Better to watch benchmarks video and read the reviews of of people who bought AMD EPYC 7702 before deciding buy this processor or not.