Considering the power difference between Tritoch and anything else in the Magitek Factory, I would say that would probably have something to do with it. I mean, most of the espers in the Magitek factory, barring Ramuh who escaped, had been having their powers drained for nearly 18 years. So, Terra's encounter with Tritoch was probably her first encounter with a fully powered Esper.

Amusing enough, there is a funny fan theory that Biggs and Wedge didn't die, they simply got sent to Chrono Trigger's dimension and now work in fair grounds.