Personally I think the battle at the execution site is way much harder than the one at the gate because I always have Teleport on Ramza. It's really great that you accumulates JPs from the jobs that the commoners have.

But I think it's really important to have either very strong jobs like knight or jobs that affect many in one strike, like wizard or summoners, in the battle at the gate. Last time I played it I had Agrias, a priest, a thief and a chemist down there and it didn't go that well They all got nuked so hard, hehe.