hmm i dont think its a strategic move when he came out of the water that early during the last IC. and it might not be due to whether hes a good swimmer or not. maybe theres some sorta technique involved to breathe properly through the bamboo tube. or he might have choke on some water right at the beginning.
hopefully ken will be able to use whatever physical advantage he possesses in the next challenge..
I think he probably just looks big because we're so used to seeing him look so thin on the show.
This is probably his regular weight.
Remember Colby on the finale show of S2?
He looked really chubby but he wasn't at all, it was just the contrast with how he had looked on the final S2 shows.