I know you aren't supposed to compare your kids, but that seems to be an impossible task. I thought second babies - especially when born close together - developed faster, and I keep waiting for it to happen, but it's not. I try not to worry that at 8 months the baby hasn't started walking around furniture, even though at 6 months the toddler was practically running circles around the coffee table (while holding on). But it feels like months that we've been saying "she's going to crawl any day" and now it looks like she'll crawl at 9 months, just like the toddler did. And, that's fine, because honestly, I don't really need two mobile kids, I'm good with one. I just don't always remember that when I'm thinking "why doesn't she have any teeth?" and other random comparisons. The baby is perfectly healthy, except for being low on the weight and height chart, but I'm not going to worry about those things until the doctor says "we need to run tests". Currently, we're watching her weight and her height to see if her weight increases and she grows onto the height chart, which could be nothing. Her numbers are right in line with me as a baby, and other than being a little short (5'3"), I'm doing just fine.
Do you compare your kids? If so, in what ways? How did they stack up against each other developmentally - do younger babies generally develop faster at all things?