I had 3 R4 from 1 battle. It's really not that hard to do when you find an AI with 80 some armor veh. And I had half the time and 1/3rd the territory Milan did.
Could he have cheated on E1? It's possible. But very honestly, I don't think he did. He was being watched like a hawk quite honestly. Other eras may have been compromised though. Can't say for absolute certainty. But E1, I joined the era around tick 600 and Milan was already solo covering Asia, NA, SA, AA, Aussie, Africa and Europe because TLA LET him build everywhere. I very much doubt he needed to create any multi's for farming xp. He had access to the entire world and AI give you easy farming material to begin with. Milan had no wars to fight, the activity to take 3/4 of the wreckages that appeared before anyone else could grab them, and easy conquers as TLA was always busy warring while they left Milan to take everything unchallenged.
I had my first R4's on tick 650 (after starting at tick 600). The issue that I ran into was there was no longer anything for me to farm after because Milan was still unchallenged and had network everywhere and I couldn't beat him half the time to conquers.
So yes, I do understand the mindset of he cheated once, who's to say he didn't cheat again. But being one of the one's on E1 who was competing against Milan for resources, I can tell you, he didn't need to cheat for what he had. It was pretty much handed to him on a silver platter. Even with fighting milan for resources, I still had over 100 conquers under my belt and I only had access to Russia, Aussie and Europe and about 250 ticks before TLA attacked me. So imagine someone MORE active, with MORE network and 3x the amount of time to grab conquers. E1 was everyone else's mistake quite honestly for literally handing Milan everything he could ever want on a silver platter. I helped Milan because TLA left me no other option. Die or use Milan's help were my choices. TLA pushing me into a corner gave milan exactly what he needed. An opportunity. And yes, I know Milan was "secretly" telling TLA I was going to attack them. I also messaged Staffy to tell him I wasn't and he said he didn't care. It was going to happen no matter what because TLA weren't thinking things through (obviously).