You also should remember that Str archer have 12 hp more than agi on lvl 34 (it can be 1 shot or hit from melee, and that's a lot IMO).
Also what are values for ATH for both lvl 34? It's really important thing to be honest
Level 34, for athl without PS, you can put 8 for 21/24, and 7 for 24/21. (-> maxed out.)
I was wrong on the level of 18/30 and 30/18, it was 35, and I edited it.. And those builds got 6 ATHL, not maxed out for the agi one, but still, I've been playing with 5 atlh and 15 agi for so much time I can't even consider 6 athl with 30 agility being bad.
In fact, those builds are viable, if you prefer running than fighting.