How were the reports from Santa Anna and Sam Houston different?

some speculation as to the reason why Sam Houston spared the life of Santa Anna after Santa Anna was captured following the Battle of San Jacinto. ... Houston later alluded to this, that Santa Anna's value was greater to the cessation of hostilities between Mexico and Texas if Santa Anna were alive

Revolutionary Texans had only formally announced their independence from Mexico 11 days earlier. On March 6, 1836, the separatists chose Sam Houston to be the commander-in-chief of the revolutionary army. Houston immediately departed for Gonzales, Texas, where the main force of the revolutionary army was stationed. When he arrived, he found that the Texan army consisted of 374 poorly dressed and ill-equipped men. Most had no guns or military experience, and they had only two days of rations.

Houston had little time to dwell on the situation, because he learned that the Mexican general Santa Anna was staging a siege of the Alamo in San Antonio. Before Houston could prepare his troops to rush to aid the defenders, however, word arrived that Santa Anna had wiped them out on March 6. Scouts reported that Santa Anna’s troops were heading east toward Gonzales. Unprepared to confront the Mexican army with his poorly trained force, Houston began a series of strategic retreats designed to give him enough time to whip his army into fighting shape.

Houston’s decision to retreat won him little but scorn from the Texas rebels. His troops and officers were eager to engage the Mexicans, and they chafed at Houston’s insistence on learning proper field maneuvers. Houston wisely continued to organize, train, and equip his troops so they would be prepared to meet Santa Anna’s army. Finally, after nearly a month of falling back, Houston ordered his men to turn around and head south to meet Santa Anna’s forces.