I've been noticing MS and Google KW Tool's counts are way off.
Yes, I've filtered bother for EXACT and MS is showing way more supposed traffic.
It's a problem, and it's becoming worse every day. MS uses the legacy keyword tool which returns wildly different data than the new beta keyword tool.
I'm looking at a keyword I rank #1 for, and the MS data is at least 5x inflated.
Just starting comparing the results yourself from both of google's keyword tools. What's the actual search volume? Who knows.
Be pessimistic and filter manually against the newer google beta interface which generally is reporting less volume. Up to 10x less volume in many words I'm looking at.