In that order
grienke has the expeirence, a more polished arm, better stuff, and a cy young. the only thing that could hold him down is his mind.
Greinke is number one, I don't think anyone can dispute that unless you are a Reds fan.
But Cueto vs Lynn can be interesting.
This is Lynn's only year as a starter, so we can only compare this season, but.
Lynn - 11-4, 3.41 ERA, 3.33 FIP, 3.47 xFIP, 103 IP, 9.17 K/9, 3.15 BB/9
Cueto - 10-5, 2.39 ERA, 3.02 FIP, 3.76 xFIP, 120.1 IP, 6.81 K/9, 2.02 BB/9
Pretty close, but very different pitchers
Kyle Lohse surprisingly compares to Cueto pretty well, they are more similar as pitchers.
Cueto is nothing like Greinke or Lynn though.