I have seen marked improvement over the past few weeks alone since I have been paying attention and its 1000% different then it was just at Christmas when I was using the first beta.
As of right now I know they are constantly improving the recognition of the platforms. They may however additionally offer the option to teach scrapeboard custom forms as well at some point. But we are still beta, so I would say its make excellent progress so far. The developers don't put out junk, and they stay on top of it supporting and improving it. However there are only so many hours in the day.
On some platforms I have gotten 500% more accounts with scrapeboard then with xrumer and thats with a custom learning file in xrumer. Out of the box scrapeboard would have out performed xrumer by 700-1000% on those forums. However overall xrumer can still obviously create more accounts because it offers more captcha solving options, at the moment anyway.
Again scrapeboard is still beta and xrumer is 5+ years old. Not too mention the time saved with a user friendly GUI on scrapeboard alone vs xrumer is exponential. Xrumer might work decent, but for being 5+ years old its GUI is MAJORLY lacking.
Anyway I digress.....
Scrapeboard is awesome, at least give it till the end of the year and make a judgement call then.
I have gotten several thousand profiles from just screwing around with it. But you have to realize that forum profiles are a completely different animal then other things such as blog comments. There is SOOOO much involved that you can't just say I am getting X profles from X number blasted. So if you have a targeted list you could get 8000+ profiles at the moment from a 10,000 profile blast with scrapeboard, but if you have a poor list you will get significantly less or none. So again its subjective.