it depends on your race. i used sh+1 (yeah yeah no comments) and some other really good gear, but you can really tell a difference with the gear.
unfortunately, i mean, what makes a good monk and a bad monk in a party (outside of someone making dumb mistakes like provoking a mob or not sc'ing right)-- is really, well, their food and gear selection. a good skill player, cant make their player WS higher. cant make them more accurate. cant make them hit harder per fist...
but that was my biggest thing, ACC... im elvaan, and yeah, miss more than a mithra would just off base ACC for example.. but my STR is way better, VIT is better... so SH+1 was a godsend for leveling MNK because when i was parsing for 95% ACC, i was tough to beat with damage.
long story short.... yeah, AF is okay i guess, but there was definitely some better gear here and there to take advantage of.