I was hoping that the grammarians here could help me decide whether it would be better to place the phrase "far more effectively and convincingly than previous authors" after "showed," as it is in Sentence 1, or at the end of the sentence, as it is in Sentence 2,
Sentence 1:
The authors of that paper showed far more effectively and convincingly than previous authors had why exposure to the organisms in question sickened some people but failed to sicken others.
Sentence 2:
The authors of that paper showed why exposure to the organisms in question sickened some people but failed to sicken others far more effectively and convincingly than previous authors had.