I've voted that having a baby at 11 is worse
The child of the 62 year old will have a much better start in life. Even if his/her parents die when he/she's young, they'll have instilled their values and I'm sure they'll make plans for when the worst does happen. She's not an 'old' 62 year old, she's probably got more life left in her than a lot of 40 year olds. I don't agree with it, but IMHO it's better than the 11 year old
The child of the 11 yr old is going to be brought up in an environment where drinking at smoking at a young age are the norm, probably on benefits and with little future to look forward to. The worst thing is that the child will probably end up doing the same. It's not the only scenario, but it's the most likely.