Let us try to understand what the sentence is trying to convey. The sentence is saying that, unlike their Japanese counterparts, American professionals are expected to perform for each quarterly report. 

Now that we have understood this let us try correcting the sentence phrasing. The sentence uses the word pressure to indicate the importance and stress American professionals undergo. The correct construction of this sentence is using the preposition under.

"Under pressure" is the correct idiomatic expression in English to describe someone experiencing stress or urgency to achieve something. "Under pressure" is the standard construction because "pressure" is treated as a force that someone is figuratively beneath, experiencing its effects.

Hence, the correct sentence is American executives, unlike their Japanese counterparts, are under pressure to show profits in each quarterly report, with little thought given to long-term goals.