well when you take the same OBJ into 4 different modeling apps and they all read it as 1 meter, I think its safe to say it's 1 meter for the purpose of defining 1 meter for inter-app usage, don't you? ;)

since a mesh will then size to an expected ratio in each app. correct?

except when the said file is brought into Poser - with scaling off so it maintains the data unaltered - and it scales as shown.

why the emphasis on unaltered? since with out that, you do get random results as anyone bringing in a multi part model knows so well...