If we are talking blood trails... I'll paraphrase a surly character who despite his life, he was an excellent civil war calvaryment... Goes something like this" who get there first with the most wins..." So since more cutting on a multi blade head they'll leave the best blood trail...
Caveat Empor, in my experience a multi blade head causes the deer to run like a bat out of hades as long as he can... I think because I can get a 2 blade head sharper and the deer will run 20-30 yds and then slow down or bed...
Just my limited experience with 3 blades... I am a 2blade man, but neither are wrong...