LL is less random than regular dice, it’s a mathematical fact and applies as a general rule, but it is not 100% sure that in 100% of all LL games, (the number of hits) are less random than reg.dice. This is b/c the randomness is mathematically reduced, it is not possible in LL battles that one player hits with i.e. 90% of all attacking or defending units, but this is possible, and sometimes happens with reg.dice.
For a series of games, there is also less randomness in LL, and then this also applies for single games, you are not guaranteed that a single LL game have less randomness than reg.dice, but the probability is much higher.
But for a series of games, (i.e. best of 10-20 games) the best player(s) will win in the long run regardless of LL/reg.dice or tech/no-tech. It’s for single games that the LL setting have most impact, b/c there is much more probable that hits will be distributed more even between the sides compared to a single reg.dice game.
This also applies for LL and tech games. We don’t have to play many games to know that some techs are game breakers, and this means that if one side gets a powerful tech, the other side must also get an equally powerful tech, or lose the game is most cases.
Also, the randomness, or reduced randomness, will be more visible and make more impact in a 1vs1 experienced player setting, b/c both players will (usually) play relatively more efficient, compared to semi-decent, casual players, and in multiplayer games. And ofc, if one player is better than the opponent, it will hardly matter what settings the game is played in.
Conclusion: in 1vs1 games, if both players are reasonable experienced, and if both players have pretty much the same skills/experience, then the randomness plays a much bigger role than in other settings.