Eu ruleset gives more garbage time, you can be down 4-0 with 5 mins left on the timer multiple times in one match vs the first half instantly ending at first to 3 giving half as much of an opportunity for garbage time, and garbage time is something that should very much be avoided in my opinion.
Half time allows teams to have time to make counter strategies. There are a lot of examples of teams winning or having a much stronger second half and they aren't punished for losing the first half with less points for playoffs/seeding.
ETF2L's point system is better than RGL's, but I think it could be better. RGL's point system is terrible because your win/loss actually doesn't matter and points are all there is(honestly not sure if this is how eu works or not, if it is I know the way ETF2L distributes points is better). This makes some dumb seeding situations where a team with a worse record can make playoffs over somebody else which punishes teams with a lot of close matches or teams who end up winning by a small amount of rounds. Record should be used first for seeding and the point system used for tiebreakers.
More of a personal opinion, but I also really dislike how in the eu ruleset you can have a game where the teams end up going 1-1 for maps in a match and leads to this really awkward feeling of not having won or lost, it's much better to have a clear winner in a match.
I've played both systems although only like a season and a half of eu ruleset and a lot more na