I think its a toss up. If you bet less your risk of getting called is higher, making him call the all-in with K high puts him at a much greater challenge, and it's also a far more aggressive move. People are psychological, and when you want them to fold in a tough spot, sometimes its better to play it by that card then by the math card.

And of course, that whole Caro's Law of Loose Wiring thing really comes into play