I do think it's kinda neat that between Benjamin Sisko and Miles O'Brien, one of their major differences is that Ben is much more openly affectionate, joyful, and exuberant, whereas Miles is so backed up emotionally that even while shit faced drunk the closest he can get to saying he loves his bestest friend in the whole world is that he really doesn't hate them anymore.
They're both dads through and through, and damn good ones at that, they're both also pretty enthusiastic about tinkering and engineering, albeit in different forms. They're the kinda guys who would go on vacation together and end up doing a DIY project involving building a whole extra room on the beach house with plumbing and electricity. They do not go to the beach once. They have an absolute blast though.
They would make excellent friends, but I imagine they'd be boring if they had a lot of episodes focused on the two of them, because there is... basically zero conflict there.
Miles follows (reasonable) orders and works hard to get everything done properly and efficiently. Ben works very hard at being a straightforward commanding officer, he gives orders that are direct and means exactly what he says. There's no major idealogical conflict between them either, they largely share identical values.
Theres several moments of comparison between them, shared PTSD from former work in Starfleet, both wanting to be above prejudice but falling short of that (Ben & Ferengi, Miles & Cardassians), there's probably something to be said of their respective best friends in Jadzia and Julian too...
Which is why the points where they differ are sort of amusing to me.
Miles comes off very grumpy, but he hasn't got a manipulative bone in his body, and is blunt and sincere to a fault, even while making half assed attempts to be gruff about it. (He fails because he is, at heart, a teddy bear, just like Ben.)
Ben, who wears a stoic authoritative mask in his job as Commander, however, is like a ray of sunshine when he's in his element with family and friends, he smiles frequently and shows a goofy, fun sense of humour...
Ben is also a lot more pragmatic and more willing to play the underhanded manipulator when needed. Yet, both and Miles equally abhor the idea of needing to use dishonesty and cruelty to achieve any ends... Ben just more often gets backed into having little other choice, which is still something Miles can deeply sympathise with and understand.
Anyway, they're both neat!














