[mgsimpleton]

first of all if he has those hands,especially the gut shot, good for him. it's far more likely he hit top pair or made a worse two pair on the river or maybe even will call with a T if he is truly bad.

you are not considering stack sizes in this response - c/r on river does not make sense when villain has less than pot left in his stack... that's why i say it's an autobet. if we were deep then while i'm probably still betting, a case could be made for checking. and in that case oyu have to worry to bet enough to seem strong while folding to a c/r. here none of that matters since villain has no money left. just put him in and be done with it.

think about hand ranges, not only the few hands he could have that are beating us. his hand range is large and we are crushing most of it, so stick the money in and stop playing scared poker.