You still don't get it, and BTW, our best pitchers is Sale (all with Vaz). Yes, Plawecki catches Eovaldi more, maybe because Eovaldi does much better with him.
For one thing, Plawecki has a better overall OPS Against than Vaz, and I've never said it was all about ERA (CERA), in fact I don't like non adjusted ERA as a stat.
Here are the numbers:
Percent of total PAs caught:
Blue- less than 1% with other catcher
Red- leader in OPS Against
Plawecki
27.6 Eovaldi .651
11.7 Pivetta .660
8.6 Houck .679
6.4 Richards .674
5.5 Perez 1.163
5.3 Taylor .640
5.2 Ottavino .765
3.9 DHern .478
3.8 Valdez .596
3.1 Whitlock .909
2.8 Barnes .828
2.2 Weber 1.500
2.0 Robles .893 & Andriese .675
1.7 Brice .492 & Davis 1.069
1.3 Sawamura .620 & Rios .902
1.0 Schreiber .885 & Crawford 1.538
0.0 ERod
Vaz
14.6 ERod .777
11.7 Richards .849
10.6 Pivetta .777
9.7 Perez .784
6.1 Eovaldi .732
5.8 Whitlock .590
4.5 Sawamura .774
4.2 Ottavino .620
3.9 Barnes .594
3.4 Sale .750
3.2 Andriese 1.002
3.1 Taylor .674
3.0 Houck .607
2.8 DHern .742
2.7 Valdez .632
1.8 Workman .828 & Rios .599
1.4 Robles .705
1.1 Davis .520
1.0 Brice 1.056
Looking at the wide disparities in % of PAs caught with each pitcher, one can see why using overall OPS against or CERA is a joke.
One can argue Plawecki caught better pitchers, but I would not agree, and how each pitcher did with each catcher one by one, shows more. Although the edge is only 9-8 in Plawecki's favor, the ones Vaz leads in are bunched more towards the lower PAs than the upper ones, like Plawecki's is. Among pitchers with 3.5% or more- Plawecki leads 6-4, but they are not the same 10 pitchers.
Look at the pitchers in blue and the PAs with them vs none or almost none with the other catcher:
Vaz: ERod (Workman a little)
Plawecki: Weber (Schreiber & Crawford a little)