As a Met, Maine is 27-17, 3.62. Since finding his form on July 15, 2006, he's 27-14, 3.55.
Maine said that he was playing hurt through his horrendous stretch last August and September. If you exclude that stretch, Maine is 25-9, 2.92 since July 15, 2006.
Obviously every pitcher looks better if you take out the bad parts, and you can always play with numbers to make a bad pitcher look like Cy Young.
Even if you include his bad stretch in late 2007, Maine has been a very good pitcher since July 2006. If you exclude that stretch where he was playing hurt, he's been a great pitcher.
Gilr