Rainbow was pissed. Even with all the extra fliers from Camp Freedom, the griffons still managed to outnumber them at least two to one. Even one on one the fight would still be in the griffons' favour because they were simply more experienced, better equipped, and born to kill. Ponies simply didn't have that same natural instinct. They could learn it, but that took time, and to have that time you needed to live, and to live in this situation, you had to be good at fighting, which brought them back to the beginning of the problem; the Equestrians weren't very good at fighting. Unsurprising for a nation that tended to sometimes use baked goods as weapons.