McCann's 2012 was injury plagued though wasn't it? I don't like writing stuff on uncertainly like that but at the same time I'm not sure it's the most reliable sample.
Fast has McCann as a +1.3 win framer per 10,000 pitches, and Ruiz as a -0.7. JFaS' study supports this as well, having the Braves add 4 runs through framing and the Phillies lose 9.
Those shouldn't be taken as exact numbers but the data has shown McCann to be considerably better at framing (don't know why I thought Ruiz was excellent) and that certainly sets them apart.
So framing numbers and the fact that McCann's 87 wRC+ might not be an entirely reliable sample are my arguments, more or less.
And of course you had to put Arencibia in there.