yep , it's x2 vs building due to zeus's bonus
since they are something like "counter everything exept greek" they are fine , they also have a hight attack and hight hack armor
(making them able to 1:1 infantry that are infantry counter)
they even have their bonus vs archer and you've got that aegis shield too.
all thoose thing makes them well balanced units , if they are backed up by some gp ( restoration or bronze)
so , as there are ubber jarl , ubber ulf , 'ubber' hulf , 'uber' hersir , ubber fanatic heroes ( lolz) , there are also some ubber myrms
but only using them is still stupid )zeus hoplites are almost the same vs greek and cost much less , are faster