You have the options to choose between X venom damage, and X*(3/4) flat damage.  The issue seems to be that, as the recent screenshot Saturday indirectly confirms, venom damage already has a significant boost due to ignoring resistance.  So, wouldn't it make more sense for the venom damage to be X*(3/4) and the flat damage to be X, so as to make up for the fact that flat damage has to deal with enemy resistance values? 
And on the sixth day, God created ant in his own image, and gave them dominion over the earth and all of its creatures.  Amen.