It doesn't take the brains of a nuclear physicist to work out that rule favours punchers, as the downed fighter would not get time to clear his head before getting punched again. In today's era even moderate punchers would score more KO's purely on the basis that it wouldn't be anything from 14 to 20 seconds from a fighter being deemed as down to the action resuming.
Then again, it might be the case that the "three knockdown rule", is more useful to a puncher than the ability to stand over an opponent. The limitation with arguments based on the rule set that a fighter fought under, is that if you take something away from them, you have to give them something else back. For example, if you downgrade their power due to the rule set, you have to upgrade their durability.
You're right Jack it was Jack Lawrence.Dempsey was flailing and kicking all around him in a desperate rage to get back to the fray he gave judge Kid McPartland a black eye as he punched out.
Doesn't work that way at all. 3 knockdowns can take anything from 45 seconds until the final KD depending on how much time the referee allows the fighter before he resumes the action, after the first KD, i:e asking him questions, wiping his gloves etc. Lets assume the first KD happens bang on the 1 minute mark. By the time the action resumes it could be 1.20 or more. The next KD occurrs at 1.25. The action could well resume after another 20 seconds or more. All of a sudden you are up around the 1.50 - 2 minute mark. In that time a Dempsey could have dropped the guy 4 or 5 times. Standing over a guy literally, and hitting him as he gets up, takes merely a few seconds. On the other thread, someone posted a video of Joe Louis destroying Schmelling in 1 round, just see how much time lapses in between the first KD and the end, due to the fact that Joe was on him as soon as he rose. No neutral corner, nothing, just straight back on him. Given those rules even Ali could have scored a lot more KO's.