[Joseph Smith]

1 out of 3 teams will have a median H.E.G. ball count that is >50
1 out of 10 teams will have a median H.E.G. ball count that is >100
1 out of 100 teams will have a median H.E.G. ball count that is >200
1 out of 600 teams will have a median H.E.G. ball count that is >400

I think a decent proportion of teams will be able to score more than 50 fuel. It may take them much of the match to do so, but...
Higher level teams (most will end up as alliance captains or first picks) will be capable of more than 100.
Maybe one team per division will be capable of more than 200.
I doubt more than 1 or 2 teams in the world will score 400, if any.