Crank Flanges how big impact to go from the Wineberg .550 thick to the Bryant .478 thick

Trying to see if these used cranks are worth using with different thickness flanges?

 

Care to elaborate?

 

Robert TF deal just noticed that they have different brand cranks mixture and measured the flange thickness to my surprise they were different..
How would you suggest to measure if they are further back . I was thinking measure from last Counter weight to far end of the Flange then to front of flange. I am sure .003 or so not big deal .100 would be a concern to me. What is your opinion?