On average, yes. But, on average, half the people are below average, Timer.
Say there is a 20% chance to win a nymph each time, and you have 5 chances to win. Sure, the average amount won is 1. But only 67% of the people end up with one. 33% of the people get nothing.
I'm not sure what you are trying to get at with the second part.
but, half are below average, the other half is above average. It's how the world works.
and once again, it matters not. Because we are really not comparing anything, the idea is that on top of what you may win from the oracle, you will have another nymph that you gained through
skill, effort, and dedication, not sheer luck. Most people will find it rather fitting to be able to pick 1 of the rarest cards in the game as a reward for their efforts. But let's face it, one single nymph isn't all that useful. Yes, you can stick it into a deck for whatever reason be it supportive or something else, but that still doesn't change the fact that the usefulness of a
single nymph isn't worth having to defeat every single FG one gritty battle at a time and no breaks allowed. So what if every elements player ends up with at least one nymph by the time they crack 1k score? By then, it will be as normal as someone winning a rare weapon for the 500 score quest.