Close prediction/selection

I've just realized a funny thing.

An effect where a match between a close prediction with a card occurs is much more stronger than retrieving a lost selection.

Well I watched yesterday The grail by Mike Rose and here the spectator doesn't choose a card but a prediction is placed face down on the table at the beginning. Furthermore the deck starts in the box and the spectator deals the card.

It's quite impressive even if it's not so practical.

Why I think it's funny because it's easier to get a prediction match than to retrieve a selection for the simple reason that you don't have to control it. Moreover since audience doesn't know what is going on, they won't be stuck on your hands trying to catch a move. Whereas if you have a selection then audience know this card will be involved in the future and will probably be the main key in routine or effect so audience will try to follow the card.