Benchmarks are deceiving at times. Some benchmark in terms of processing power and others benchmark by the game played - which is effectively useless since a GPU has the biggest impact and some GPUs will work one one rig better than another. Not to mention some people have extra programs running in the background while gaming, but most benchmarks don’t consider this.
I’ve only ever had 1 Intel system, and it had a lower clock speed than my AMD at the time, but it ran much smoother. Everything just ran much better in casual use. For Intel.
I have an AMD system currently due to cost VS power. AMD will get you more power for a lower cost until you start reaching the $300 range of CPUs. Then it evens out, but the pricier CPUs tend to favor intel - depending on circumstance.
AMD isn’t always less efficient in terms of power. I have a 8320 cpu @ 125w and my wife has the 6300 cpu at I think 95w, but in terms of performance they run about the same. My benchmark shows higher and our clock speeds are the same, but I have 8 cores (while she has 6) so of course when it comes to multiprocessing its going to be better. However, for video games the performance is close to the same since most games will not use 8 cores - if you’re only gaming at the time.
Now if you multitask like me, then 8 cores will come in handy. I work with several excel spreadsheets, have multiple browsers and e-mail programs open along with Twitch streams and such - even while I game. The game won’t use all 8, but the system itself will so I can have extra browsers and programs running without a performance hit. Its slightly noticeable on my wife’s computer. Our motherboards are different, but they boast the same stats in terms of speed potential. Our ram is the same speed, and she even has more ram @ 16GB. CPU clock speeds are the same, but as I said, I have 2 extra cores than her.
Best advice I can give is to find out what you want to do, then find someone who does it and ask what they use. Take a few polls and make a decision from that.