I never should have underestimated the ability of these sisters when considering how difficult it was to take them out in TAR14. They were Uturned in the leg they were eliminated in and it still seems like that if the challenge a been a little bit easier OR if they had not gotten lost OR if not the great bathroom break they could have made it to the final and possibly won as Tammy and Victor only benefited from Luke's breakdown.
Also Tammy and Victor targeted them even though Margie and Luke had the most first place finishes at that point and they were great assessors of their competition.
Tammy & Victor made the wisest decision in U-Turning Kisha & Jen not just because they eventually ended up winning TAR14, but also because Margie & Luke probably would have been the first team to ever avoid elimination after being the only team U-Turned.
Here are puddin's caps from the TAR14 finale:
The U-Turn only cost Kisha & Jen ~15 minutes, so they would have probably still been behind the top 2 teams by over 2 hours even without doing it.
If Margie & Luke had to do the U-Turn, they still would have had a 2-hour cushion to finish. Speaking Mandarin would've probably been difficult for Margie to do solo, but I think the judge would've cut her enough slack in order for them to finish in time to make the top 3.
Tammy & Victor avoided having to deal with both Margie & Luke and Kisha & Jen in the finale, which was the smart choice.