It's the hype after being selected for the ESC. Cry Baby ( the infamous nil pois(sic!) reached no 15 in the UK charts, an infinitely bigger market than Norway's. And that was even after it competed in the ESC
)
Touch My Fire would most certainly reach the Top 5. The singles chart can be easily manupulated.
If I like the Norwegian song, does it elevate me into a weirdo?
Look at The Darkness. The guy can't even sing properly and they're one of the biggest selling acts of the UK. It's a novelty comic thing if anything else.