We have no idea how good a hitter Gamel is based on his major league stats, you would be much better going off the minor league ones at this point with the understanding they are pretty iffy too. 145 MLB ABs doesn't tell you anything at all about a hitter though, he could have a 1.000 OPS and be a terrible hitter, he could have a .500 OPS and be a great one, there is no way to know yet with such a small sample. But yeah we have no depth at all when it comes to hitting, we traded it all away for pitching the past few years. If Fielder and Weeks walk next year and we somehow don't replace them we become the Mariners offensively.