This is, by far, the best Stroman has pitched since 2015. The 3 seasons in between (~2000 PAs) saw his effectiveness sit between .310-.325.
I haven't really looked into Stroman much, and I'd agree to toss out his 2018 numbers a bit due to injury/rust, but he seems more like a .300-.320 guy than the guy who would be the best SP on the Braves roster.
This idea that Stroman is some sort of TOR stud that will fix a rotation is something I would have to be sold on a bit more to justify the price he is likely to command. Same with a late-comer like Boyd.