I'm not really sure what you're getting at.
I will say though that you will see a lot more all-in shoves pre-flop than post. Depending on what type of game you're playing, a pre-flop shove could mean a lot of things. For example, in satellites, especially ones with a rebuy, a pre-flop shove may come with a lot of higher quality playable
hands (most pairs, AK, AQ AJs, ATs, KQs). It may be correct in this type of game to call with less than the top 1% of hands, realizing that there is a large
crapshoot element to this type of play. Whereas in a cash game, a pre-flop shove usually means the bettor
IS holding the top 1% of hands. You often see AA vs KK or AKs in these games, and not much else if the play is all-in.
However post, especially on the river, it usually means that the bettor has a really good hand, such as a set, or has completed that flush or straight draw. Calling a shove post is rarely warranted without an equally (hopefully better) fantastic hand.