A bond pays you interest and you can get your money back by selling it around the same price depending on the market. SP dilutes like Steem just slower and you can't touch it for 2 years.
The thing about Steem chart is that there's absolutely no indication of a bounce or reversal coming, there's no actual interest in buying it. I personally wouldn't even buy it a 10 cents and I've been a trader and a investor for years now. And I'm just mentioning the technical analysis, I'm a fundamentals guy, so don't get me started on that ;)