It's an educated guess since Pollstar disclosed Chrom's 14shows average a week ago..
But looking back at it, i think it's not ideal to compare Pollstar and Touring Data since Touring Data's European Grosses are lower
From Pollstar's 14shows average $5.339M Av/$74.75M
From Pollstar's 13shows average $5.421M Av/$70.47M
From Touring Data's 13shows average $5.388M Av/$70.048M
Pollstar 14shows-13shows dif: $4.278M
Pollstar 14shows - Touring Data 13shows dif: $4.699M