This may be due to the structural characteristic of the English language, or may be that they pronounce the end of the words clearly, which gives a strong impression of the vocalization.
Contrary to English, the Japanese language tends to end the pronunciation of words vague, due to, as is said in the characteristic of being syllabic language. However, it is advisable to vocalize with abdominal pressure for high pitches and to clearly pronounce the end of the words.
b) About "Timing"
Musei Tokugawa, a distinguished Japanese master of elocution had mentioned the importance of timing in speech. For us, the esophageal speakers, the importance of timing is a matter of study.