In Jimmy's first year as starter his competition was a Chris Osgood who was at the tail end of his career and putting up bad numbers. In 2011 Howard's competition was Joey MacDonald, in 2012 it was Ty Conklin. It's apples and oranges, had we had a vet goaltender at that time who was out playing Jimmy, I'm sure that Jimmy' would have been on a shorter leash. Also, it was a different coach, you really can't compare the situations.
I'm not going to sit here and tell you that Jimmy and Mrazek have been treated the exact same, they haven't. Why have they not been treated the same, IMO it's due to a variety of reasons, ranging from the coach, their attitude, the state of team, the competition, etc.
Its not as simple as you attempt to make it seem. You sound as if you have blind hate for Jimmy, and blind love for Mrazek.
I have said this before, but I want Mrazek to turn it around, unfortunately all signs point against that. What I dont get about you, is you seem to cheer for Jimmy to fail. I just don't get that mentality.
I do wish Mrazek got a few more starts, but when he does get starts, its on him to impress. My issue is the entitlement that you and some other seems to have on behalf of Mrazek. He's not "owed" anything.