Can you remember numbers well? If so, then you're probably bad with names. Are you good with names? If so, then you're probably bad with numbers. 91% of all people either retain names well or numbers well, but not both! Does that surprise you?
Think back to your last training class. Were people there still asking questions long after you retained the information? That was a classic case of them being opposite of you. They were not stupid; they just had a hard time retaining that part of the information because it was their weak side.