Theres too much difference between boxing and Amateur boxing to even compare. Of course amateur is a great learning experience to enter the pro game, but overall it's just too different.
With amateur records that span into the hundreds, you'll find that a large percentage of the record is from underage boxing where fighters fight a lot more frequently. Still impressive obviously. But Lomachenko's 396-1 record is probably closer to about 96-1 in Senior Amateur boxing
You aren't fighting elite guys in your first 10 fights, unless, maybe you are a heavyweight. The local guys you fight are usually guys trying to lose weight, white guys wrestler type guys getting striking training in for MMA, or black guys who couldn't get picked for basketball. No offense to anyone, it's just what it is nowadays. You generally don't fight real boxers until you get to the regional type meets, than of course nationals and internationals.
Yeah, but it's still a guy with some training, in a ring, swinging at your head under a controlled environment. More similar than different.
The same is true of your first pro fight, you aren't fighting elite guys then either. And while I totally agree that you'd be facing better opposition in the am's later on, that is clearly outweighed IMHO by the enormous amount of learning that occurs when you step into the ring for the first few times in a real fight, not just sparring.
Like I said it's a great learning experience, but theres too much difference between amateur boxing to pro boxing to compare.
It also fails to take into account at what level the amateur fights were occurring. Lots of regional levels fights and comps don't compare to fights at the likes of the worlds or Olympics.
How does an 84-8 record equate to 4-0? 92 fights would be 5 pro decisions even by your whacky creation. I would chalk it up as a typo (meant 4-1), but you went on to add another 17 wins to that 4-0. Or maybe you just mean that a guy can fight 350 amateur fights, go 26-24 in his first 50, then continuously going 6-4 every 10 fights equating to a 206-144 amateur record and consider that the equivalent to 31-0 as a pro. Solid logic.
I've seen a lot of debut fights and usually it's a total wipeout, on points or the guy just falls over. In only a few cases the first "opponent" actually puts up a fight. You can't honestly believe that's comparable to 50 amateur bouts, certainly not if quite a number of those amateurs you encounter would completely whoop that first "pro" you faced. People seem to forget what a "pro boxer" actually is. It's a guy that steps into a ring to get paid, nothing more, nothing less. It doesn't say anything about their level, as we've seen so many times in the past where you wouldn't favor the guy in a local barfight and just steps into the ring to collect his paycheck in exchange for taking a beating.