Where do you get the stats?
I saw your crossing stats matches those of Whoscored crosses per game = average stats. So need clarification.
It's a case of assumption base on lack of evidence than anything else. Key passes, assists ain't world apart.
Stats wise there ain't much between Perisic and Valencia as you posed, but it's not hard to anyone to see the contrast difference if they're to watch these 2 teams play
I don't watch enough of Hoffenheim to say I know how overall Kramaric perform, but I followed Croatia enough to confirm he's not as good crosser, and there is reason for someone who lack all kind of end product like Rebic is preferred for the role of causing chaos and pressure relief. Assist stats and key passes stats show Kramaric is far from other players (only better than Valencia). Eriksen is a level on his own while there ain't much between key passes and assist stats between them. Then consider the context that Perisic is considered the most hard worker of these wide attacker, and Serie A is more defensive oriented with more even quality between the 2 leading teams.
So unless we can have compilation of all the crosses (preferred the whole sequence of play) to judge, to draw conclusion base on stats is anything but accuracy.