EZ Drummer - Keyboard vs Mouse Triggered Drums Sound Different ??????

[BPlayer]

I own EZ Drummer and almost all the optional kits. I have an M-Audio Oxygen 88 as my midi controller running Protools 9.0.6. When I open a drum kit, take my mouse and click on a drum it sounds much better than when I press a key on my midi controller. The controller produces a more muffled sound - not as clear/precise/deep as clicking on the drum with my mouse. Why would they be different and how can I get the keyboard to sound as good as the mouse triggers? The best way to describe the difference is that the mouse clicks on the drums sound full and rich while the drums triggered by the keyboard sound whimpy........