Biovore or Plagueburst Crawler for mythic passive buff?

Which one should I focus on for the 10-20% dmg buff passive on mythic? Seen more ppl say Biovore, but I wonder why. There are way more Nid bosses than Chaos bosses so I'd get to take plagueburst more often than biovore.

Ok maybe the argument is that the nid bosses are easier and u want the dmg buff for the harder bosses, but for me that would be even more of an argument against it as my guild doesnt reach mythic bosses so most of the times I never fight chaos bosses anyways.

Some say you can use biovore for positioning the boss. Gotta be honest I have yet to fully figure that one out so idk how useful it is and its not like plagueburst doesnt have good uses too. You can use it to remove Khaines flame hex effects.