Hardly. There are some marginals or alien ones, but a lot of the planets are almost like Earth - like say, Adlerhorst, Botany Bay, Montana, Kwantung*, Doris, Chengdu* or Syuhlahm.
*These are even described in the Colonial Atlas as "almost Earthlike" or "very much like Earth".
The slightly less Earth-like ones are sometimes just Earth with one significant parameter changed, like native life, rotation period, more flares, colder or warmer, more or less oceans etc.
But overall, I'd say the chances of a nearby star in 2300AD having a perfectly habitable world with human-tolerable gravity, and between 18 and 23% O2 breathable air are remarkable. Even if tidally locked, without advanced native life, extremely cold etc.
My big problem with this is: So, a lot of stars have neat colonial territory orbiting them. Shouldn't even more stars, say five times as many, just have marginal or alien worlds - places like Crater, Aurore or Heidelsheimat? Where are those stars? Where are the stars too young or too old?
As for Beowulf, well. It has almost the same mass, almost the same density (although one might be a bit suspicious when one read the entry, as 6.4 g/cc is more than Earth, and the listing also says 0.9 Earth...), almost exactly the same atmosphere, almost the same hydrosphere, almost the same ecology. What it does have is a different rotational period which oddly enough doesn't seem to have _that_ much effect on climate, and rather unbelievable moons in fairly unbelievable orbits. And the orbital period is calculated wrong. Quite a lot wrong. (Not the only place where the Colonial Atlas could use some proofreading)
But essentially, there's the day length difference. Earth, one thing changed.
