The short answer is no. Both types of agreements impose the same obligations in terms of sharing tax information.
I think it is obvious to everyone on the committee that I am an anglophone, even though my name is Gérard Lalonde. So I will give the rest of my answer in English.
The two types of agreements have the same types of obligations vis-à-vis tax information exchange. But double taxation agreements go far beyond that, and provide for other obligations with respect to withholding taxes on dividends and on interest and on other features of the tax system that are not included in tax information exchange agreements.
It may very well be that from the perspective of Panama, they would like to tap into some of those provisions, and for the same reason, Canada is reluctant to enter into those.