Hmm..thats weird. Idk ive tried it like twice on business cards and got 100% both times.
Considering your success, I tried a lot harder. I did the following:
Waited for the 2.0.1 update with better camera focussing.
Cleaned the camera lens
Used a very bright light
Tried with a simple black on white business card
Held the camera button down part way until focus.
Held the camera still for another second after the click
Zoomed until the card fit in the upper 2/3 of the screen, where it seems to want to crop.
After all that, I managed to collect about 75% of the card information on the very simple card. For example, I was able to get all three phone numbers correctly, and the email to show up as email on the intermediate screen.
But then I hit Add to Contacts, and of the three phone numbers found, only one was listed in the contact list, defaulted to home. I couldn't find any way to add the other two phone numbers it clearly found.
So far, Google Business Card feature is just a big time waste. I can enter the info by hand way far faster than this software can scan and mangle the information. They need someone at Google to actually make this software work.