That's not so bad for a power ballad. I bet you sound good.
I've seen it where people get up to karaoke and are actually really good.
If I could sing half way decent, I'd probably karaoke to something from the Go-Go's; like "We Got The Beat","Vacation" or something totally cheesy like that :)
I didn't sound too bad. My problem is that I don't have much range, I can't sing that high or all that low, either. However, alcohol seems to loosen up my vocal cords a bit and I can get about a step or so higher.