This is a subject that has annoyed me for a long time --- Why are half-orcs mechanically so terrible compared to the other racial choices?
Dwarves get +2 Con, -2 Cha. +2 on search checks underground, darkvision, +2 vs poisons, +2 vs all spells, +1 to hit orcs, +1 against goblinoids, +4 AC vs giants, +2 to the lore skill in general, and Ravenloft gives them Weapon Proficiency: Dwarven War Axe.
Elves get +2 Dex, -2 Con. Immunity to sleep spells. +2 on saving throws vs mind-affecting spells. Bonus proficiencies with swords and bows. Skill bonuses to listen, search, and spot. Passive active searching and low-light vision.
Gnomes get +2 Con, -2 Strength. +2 against mind-spells, +1 to hit vs reptillian humanoids and goblinoids, +4AC vs giants, +2 to the listen and concentration skills, Spell Focus: Illusion as a free feat, low-light vision, and then Small Stature which gives them +1 to attack rolls, +1 to AC, +4 size bonus to stealth and detection at the cost ofbeing unable to use tower shields and large weapons.
Half-elves get Elf-lite abilities: immunity to sleep, +2 vs mind affecting spells, +1 to listen, search, and spot, and low light vision.
Halflings get the perfect storm of rogue abilities: +2 dex, -2 strength, +2 move silently, +2 listen, +1 to all saving throws (essentially, LoH for free), +2 against fear, +1 with throwing weapons, and then all of the aforementioned Small stature bonuses that gnomes get.
Humans, of course, get a free feat and 23 extra skill points, which is arguably better than nearly anything above..
But then half-orcs? +2 str at the cost of -2int AND -2cha, making them the only race whose ability scores are a net loss. And their only other bonus? Darkvision. Add to that, the module makes being a half-orc or caliban hardmode with the OCR system.
Do half-orcs need to suck that much worse than everyone else? +2 strength really isn't even that much of a benefit on the whole, as nearly any stat spread you can make for a strength-built character would have better stats all around with a human or dwarf.
(Edited to append..) Given how many fighter/combat feats require Dex, it's hard to argue +2 strength is more broken than +2 dex that other races can get without going into a net-loss of attribute points.