Just because a manufacturer says 100% maple, it doesn;t mean that you have 100% good maple. Wood is never 100% consistent and consequently not all maple is good maple, or oak, or birch, or bubinga or padauk or cherry or ash or...well you get the point.
In an effort to maintain or increase profitability, it is commonplace for shell makers to use lesser quality plies in the middle of the laminate. Often containing patches and/or knotty wood, the inner plies can often be detrimental to the liveliness of the shell.
I've seen some drums that were advertised as 100% maple, but upon inspection the inner plies were of such substantially different color. Without a dna test, how are you going to know for sure that your new 100% drums are really all maple?
They have a grading system for wood for a reason.
My .02.