A possible meta explanation regarding the notable difference in strength between Stromling Agents and Stromling Explorers. There are rarely more than one or two Stromling Agents on-screen at a time, and they prove very hard to defeat. Stromling Explorers almost always act as a group, leaving them as nothing more than Cannon Fodder.
Even noticeable with common Mutant Dinos. Compare how hard it is to kill one Mutant Raptor versus an entire pack of Mutant Raptors.