For brevity's sake, I won't list the names, just the leader and #10 for OOTP, and the leader and #16 for RL 1984 MLB. First OOTP batters:
Leader/#10:
G: 161/157
PA: 702/678
AB: 645/608
H: 219/172
2B: 42/34
3B: 12/9
HR: 50/27
RBI: 122/98
R: 117/95
BB: 126/80
IBB: 11/7
HBP: 27/5
SH: 18/13
SF: 12/9
K: 181/133
GDP: 26/19
TB: 354/287
RC (Bill James version): 158/106
WPA: 6.15/3.37
wRC (fangraphs version): 146/104
fWAR: 8.3/5.4
SB: 63/34
CS: 22/15
BatR (fangraphs Batting Runs Above Average): 67.0/28.9
wSB (fangraphs SB Runs Above Average): 10.1/3.3
Now 1984 MLB:
Leader/#16:
G: 162/159
PA: 738/689
AB: 701/612
H: 213/180
2B: 44/34
3B: 19/9
HR: 43/27
RBI: 123/97
R: 121/97
BB: 107/77
IBB: 25/12
HBP: 23/6
SH: 16/11
SF: 14/9
K: 168/115
GDP: 36/18
TB: 339/285
RC: 132/108
WPA: 7.39/3.78
wRC: 132/106
fWAR: 9.8/5.6
SB: 75/39
CS: 22/13
BatR: 42.6/31.4
wSB: 11.0/3.6
If the alphabet soup stats make your eyes glaze over, that's OK. Stick to the stats you know and understand.
I'm not really so concerned about the leader numbers, because leaders are, by definition, outliers. But, look at the #10 vs #16 numbers. 2B, 3B, HR, and SF are exactly the same. I don't care too much about SF, but 2B, 3B, and HR? Whoa! RBI and R are extremely close too. BB are right there. K always seem to be somewhat top heavy in OOTP. Can't figure out why, but I've always noticed it, both with hitters and pitchers. GDP are pretty close, and TB are insanely close. Most of the alphabet soup stuff too. Maybe I'm on to something here. Small sample size of one season of course.
Pitchers in next post.