I just have to wade in and ask how the old ontario barns stand? Most of our barns have 3x4 pine braces with 3x2 tenons and 1" shoulders. And much bigger buildings.. 30 or more wide queen frames and 40 or more wide aisled frames. The posts tend to be 10x10.
The frame you are talking about(although I can't understand your 10x14 bay measure with three bents{do you mean 20x14?}) are smaller and better braced than our barns...