I will not make any negative comments about the Maverick pump shotgun because I have exactly zero experience with it.
Now on the other hand I do have a Pardner Protector and it has been nothing short of dependable. Its only negative would be that it is a little on the heavy side but then that would be good for clobbering bad guys.
Mine loads and ejects like it is supposed to and fires when I pull the trigger. I would guess that the Maverick does about as well and when I was looking for an HD shotgun I considered the Maverick also.
I really doubt if you would lose out which ever scatter gun you choose.