Palodios, you can play 162 games a year, but if your OPS fluctuates between .900-1.000 and mid-800's every year, are you really consistent? Not saying this is the case with Fielder, just illustrating that playing a lot of games and putting up consistent numbers are not the same thing.
Fielder is extremely talented, but as a 1B who's bad defensively and has had three straight years of declining OPS, this is an enormous gamble for Texas. His three-year decline is eerily similar to Teixeira, and no one would touch him with a ten-foot pole right now, would they?