the phys dmg is pretty irrelevant for a magezon using freezing arrow and immolating arrow, as far as i know.
the +2 and 20 ias is the most important part.
magezon dont use all that much strenght and dexterity, normally is pure vitality, she needs run a lot with 3k life doing circle movements to round the packs and kill them, im the only one who does amazon 1/8 on classic
that bow is a fail
rune bow base is for physical and not mage
so that bow is not good, is a charsi shame, the best magebow i saw is here =>
https://forums.d2jsp.org/topic.php?t=107685283&f=176