To be quite honest I don't know, I believe the max tx setting on the 522 is 5 so it would stand to reason that it would talk further but in reality it doesn't. The 117F will "step" on the smaller radios but talking VHF, in my experiences with both and with as you pointed out the same antennas, either 3 ft whip or 10 ft, they work the same.
We do use expedient antennas(when the situation permits) with the Cobra Heads and stuff but it is a bit of a lost art, no Droopy Dipoles or anything like that, about the best you'll see now is a piece of WD-1 strung out along the ground, to go along with that I've only seen one set up overseas, not saying its correct but just not something we practice a lot anymore but probably should.