Do you really think the difference in numbers plays a role?
It's not merely a difference in scale but also of politics.
The genocide of Poles was a political decision of ethnic cleansing, made by Ukrainian leaders and conducted ruthlessly and systematically on civilian population, whilst criminal acts of "cursed soldiers" were individual decisions of particular unit commanders -
they weren't under Home Army command any more; as you surely remember, Home Army was dissolved on 19th January 1945 by the order of general Leopold Okulicki and any units who disobeyed the order and commited crimes against civilians after that date brought the disgrace and shame only on themselves.