An argument about which ball is harder to block isn't really the point. There are lots of catchers in MLB and MiLB who do a very good job of blocking, using proper blocking mechanics. In comparison with those catchers, Wilson Contreras' blocking skills are sub-par for the level he is playing. As GM said, you would think his blocking mechanics would have been corrected before he got to this level. There are things about his game behind that I really like. Blocking isn't anywhere near being on that list. The first time my DW saw Contreras do his goofy 1-legged block, she asked, "What the hell is he doing?" I think my dog even cocked his head to the side a bit.