Lets see some pictures.  

If you are talking multiple producers over multiple fields, there has to be one field that they switched brands mid field and would show up easily with a drone or taken from the top of a semi.

I don't sell pioneer, but we were 95% pioneer this year.  We have had a plot every year for decades.  They struggled back 10 years ago, we quit planting it for a couple years,  then 4-5 years ago they started making a comeback.  I would take pioneer over any brand now, the amount of solid hybrids in the 100-105 day selection I don't think can be beat.