I dont agree with some of these stats. Well not really the stats themselves but rather what the represent. Some stolen bases and such have to be put on the pitcher also. For example, if a runner takes off before the pitcher star goes to the plate, the chance of a catcher catching the base runner goes down. And, if the pitcher tosses a dime to the next batter and he crushes it, all of a sudden one of the runs gets put on the catcher for not throwing out the base runner.
I'm not saying Ianetta is great catcher by any means, I'm just saying calculating stats the these are difficult to do and may not always reflect the true story.