In vBulletin, you had a separate avatar image (80x80px) and profile (150x150px) image. In XenForo, there is only an avatar image.
Your old avatar has been pulled into XenForo but may look fuzzy. XenForo suggests at least a 400x400px image, so you might consider uploading a new one.
Your old avatar has been pulled into XenForo but may look fuzzy. XenForo suggests at least a 400x400px image, so you might consider uploading a new one.