It's not better in Norway. There's always something wrong with the trains. There's been abysmal punctuality or cancellation numbers that would make even German train operators blush. They're on partial strike at the moment and although there are many cancellations I hardly notice any difference between a planned disruption by strike and an unplanned disruption by mismanagement.
And biking in urban centers is near suicide. The Norwegian Cyclists' Association recently published their biannual questionnaire results and only 18% think that cycling is "generally save across all age and experience groups".

Let's not underestimate the costs of building rail. You're always going to have roads first, because ambulances don't go on rail. So that's not optional. Rail is an addition, and you do have to factor in a lot to figure out if it's really worth it (including environmentally). And if you need to literally make a tunnel or a bridge to add a train, like you do in most of Norway, it's not really going to work.

Within urban centers however I do agree that rail is a good complement to good bicycle lanes, and it is a fact that deregulation and underinvestment in rail over the past 40 years really is hitting Sweden hard. Unfortunately the people who are in charge of public transit have never gone anywhere by bus, so they're clueless of what to do.

Copenhagen is about the same latitude as north England or Ireland. It's not mountainous and fairly warm. It's great for cycling, especially with the water buses. (I really like Copenhagen)

Norway is rather different on the whole. Outside of Oslo or the larger towns I doubt you'd see as much, especially as you go north.