Right, your saying that if you flipped a coin 100 billion times, the chance of the two tallies of heads and tails is more likely to have a bigger difference. Like, it wouldnt be that unlikely for heads to come up 1000 more times than heads.

However, lets say heads represents ang.(angular momentum) in a clockwise direction, and tails represents ang.mom in a counterclockwise direction. And each coin contains mass. If we flipped a coin five times the coin on average would spin fast. Because even though the most angular momentum the whole system could contain would be five, all heads or all tails, the mass of the coins is five so any deviation makes a big difference, in how much ang./mass the system has. which would be representative of the percent of heads to tails there were, 100% any coin would be the fastest 50% would be the very slowest.

Now if you flipped a hundred billion coins, you would most likely have more total ang. on average than if you flipped five. Lets say after you flipped a coin 100 billion times heads came up 1000 more times than tails. The speed in which it spinned, or its ang./mass, would be 1000/100,000,000,000 or 1/100,000,000 very small. compared to if you flipped it five times it would be 1/5, 2/5, 3/5, 4/5, or 5/5 all much larger numbers.

And the fact is larger galaxies not only have larger amounts of ang., they have more ang./mass. Which is opposite of how a random system would work.