Self explanatory anyone who’s actually played the game can tell you that a single FT soldier can second wind you or come close. the simple fact is that FT can do consistent damage ie(full auto weapons) while the predator can only do burst damage.
One player shouldn’t be able to second wind that fast. 2v1 is more understandable but you should expect to take a reasonable amount of damage. https://youtu.be/eEiDF_xSfgU