Why are we talking about this now? If we want to compare any top boxers, even retired ones with Conor in a boxing fight, those are bets I would take all day long. Conor has good mma boxing but pure high level boxing is completely different.
As Khan said, he telegraphs a fair bit and he really needs to address the cardio if he were to have any shot at all with any of those guys and that is being generous to a fault.
Even if Conor managed to luck out and clip one of these guys it doesn't make him a top boxer, that's just stupid, lol. I guess watching Mayweather half heartedly fuck around for 3/4 of what looked like a sparring session and then just decide to close the deal was not convincing enough for all of the unbiased geniuses out there right?