i always aoe balance and arrow if rng is in my side , the if a bard is playing songs and i happen to get extended ewer they will get it , if a bole appears (i personally never use bole) i royal road it n then if an arrow or balance pops up ill give it to ninja or monk (if balance i give it to smn or blm too) , a monk with enhanced arrow with full GL is a beast , numbers flying everywhere lol. i find arrow to be the best to aoe as it helps everyone including main healer as opposed to balance affecting a maximum of 7/8 for its full duration (time dilation on said nin/mnk)
parsers arent needed just an understanding of each jobs general rotation will tell you who is performing well and who isnt , parsers just encourage an elitist attitude and none of us want that