My DD (9) is bright, and is overall good at everything. Literally everything. Not genius levels bright, but learns quickly and has a diligent, thorough, perfectionist type personality and super well behaved so does very well in school. She does struggle majorly with anxiety though, but masks very well. So yes, I'd say bright enough.
Middle one DS (8) is a thinker, and is very interested science and maths, reads and seeks information on the things he's interested in. Except his social skills are a bit lacking although he gets by well enough and has friends. I suspect HFA to be honest (as many of the men in my family are) so he will talk and talk and talk on a subject he knows about, so does get labelled 'clever'. He cannot, however, function very well in reality. Can barely dress himself as he gets so distracted, forgets EVERYTHING unless its some strange academic facts about whatever topic he's into. His reading and writing were slower to develop than DDs but to be fair, with some work he's caught up really well. So yes and no, I'd say, but I can imagine him doing very well in a job that he's interested in.
DS (4) has been outside eating snow tonight
he's bright enough to be fair. He 'functions' better in real life than my older DS and has learned a new language to being pretty fluent in a year, but I think most DC would if they were immersed in it like he's been. He's on target and a bit above for stuff in school. Probably a bit above averagely bright. He does some things a lot better than his peers (holding a pencil, drawing etc) but is not shockingly advanced. Its hard to say as he's young. But I have no concerns.
My main thing is that they are all doing OK enough educationally and are happy and have fun.