No, their stats aren't similar at all. I'll pick on James's first 3 years vs Minor's career even if there's some sampling issues.
James's first 3 years he compiled a fine ERA 4.00, good for a 110 ERA+ but the Cracks had shown before that, 6.7 K/9 3.4 BB/9 1.6 HR/9. Good for a 5.28 FIP. Minor's ERA isn't as good, his career ERA 4.10 and his ERA+ is 93, but Minor has much stronger peripherals. 7.8 K/9 2.6 BB/9 1.1 HR/9 which is why his FIP is 3.90. Minor is a much stronger pitcher than James. He doesn't have the ERA James had, but his peripherals are so much better which is why he goes deeper into games. Call it a hunch, but I think James's ERA was boosted because of Bobby knowing when to pull him out of games before he imploded.
I didn't say stats, I said their starts. You know, Medlen can never get close to Maddux's stats but when we watched him go on that roll in 2012, we all said "it's like watching Maddux pitch".
I'm going by the eye test. When they both struggled, they both had similar tendencies to give up long balls, walk guys, and get hit hard.
Their stuff is kind of similar. James was low 90's fastball, a change and a curve. Minor is the same way, although Santana taught him somewhat of a cutter.
THere were times BObby left Chuckie in too long as well.