Until the difference is clear, how can we apply. I have no hesitation in applying under the 'sponsorship' stream and be the person's sponsor but the I will still be curious what different documents will be provided in this case, than the 'tourist' stream.
It is just my hunch that in case of 'sponsorship' stream I, as a sponsor, will provide my bank statements and in case of 'tourist' stream the person will provide his/her bank statements. I need to confirm this somehow.