Yes, the KH general bodyguards are tough, but I've beaten them 1v1 with Drapanai. Sure, the Drapanai had numbers (80 vs 55? (45?)), but this is my bulk infantry vs FM bodyguards. Bodyguards should mop the floor with a bunch of unarmored (non-chemically altered) dudes, no matter how crazy they are.

This was in campaign, vs AI, so that may go a long way to explaining their poor performance. . .
Battle on M, so nobody got any crazy bonuses.