Here is some testing I did recently in MLB '14.
http://www.operationsports.com/forum...zips-osfm.html
I have been running sims since I got MLB '15 and it appears that a few small tweaks were made to the sim engine. Preliminary data tells me that SCEA ratcheted up the strikeouts. Another way to say this is that an 85 K/9 rating in MLB '15 will result in more Ks than an 85 K/9 rating in MLB '14. It looks like an 85 K/9 rating in MLB '14 is roughly equivalent to an 81 K/9 rating in MLB '15.
There also appears to be a slight difference in homers, with homers being a bit more abundant in the new game. This has been observed using my own ratings as well as out-of-the-box SCEA ratings.
Some of the changes are good things. It looks like very high BB rates for batters and high K rates for RPs are a bit more obtainable with this new engine although we still can't quite do Kimbrel and Chapman justice with a mere 99 K/9 rating.
Anyhow, I will be posting some data in this thread that highlights how ratings for specific players interact with the sim engine to produce stats. It won't be a full-on derivation or anything, but the data will be used as a basis for the ratings that go into the Hybrid roster. During all of my tests, I will be using default sliders and with injuries/trades off (cpu roster control on). Feel free to post your own data in this thread as well.
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