or do I just have to accept they're different?
FC sent each of them a lego bionicle. DS2 (age5) has sat for just over an hour this afternoon and made his, following the instructions, completely on his own, with no help at all.
DS1 (age7) tipped the pieces out of the box, put about 5 together (asking me if each was right/what do I do next between each piece) and then gave up and moved on to the next thing for, Oh, about 60 seconds.
DS1 is bright and reads exceptionally well for his age, but trying to keep him focused on anything for more than a few minutes is impossible. DS2 is also bright (as above) but still can't read at all!