I'm aware of the marked difference in the real life stats between Carlton and Higuera... and I understand why you made the move...
For what it's worth, these two pitchers had very similar sim stats during the League 8 season. I briefly considered taking Higuera but his mediocre sim stats scared me off.
'82 Steve Carlton
Home Park: Humphrey Metrodome (0, +2, +2, 0/0, 1.07)
Team's Defense: 95 plus plays, 21 minus plays
Home Stats: 142 ips, .295 oav, .371 oav, .443 slg, 1.69 whip, 5.83 era
Road Stats: 125.1 ips, .273 oav, .358 obp, .455 slg, 1.61 whip, 5.82 era
Overall: 267.1 ips, .285 oav, .365 obp, .449 slg, 1.65 whip, 5.82 era
'88 Ted Higuera
Home Park: Citizen's Bank (0, 0, -1, 0/0, 1.02)
Team's Defense: 86 plus plays, 26 minus plays
Home Stats: 76.1 ips, .299 oav, .375 oav, .484 slg, 1.69 whip, 6.25 era
Road Stats: 121.1 ips, .284 oav, .355 obp, .434 slg, 1.61 whip, 5.27 era
Overall Stats: 197.2 ips, .290 oav, .363 obp, .453 slg, 1.64 whip, 5.65 era