Yeah, you definitely got the short end of the deck on these.
The second hand, though, is clearly a kamikaze move, hoping you'll lay down a good hand and keep your chip lead. If not, at that point I'm willing to gamble as a 3:2 dog. Got lucky.
The first hand is different. I already sense that you get how to play HU, so your raise means, well, your raise means you feel like raising simply because I limped. When you bet the flop, as aggro as I am, I figure you don't have a flush and also you probably don't have a single big flush card more than 1/3 of the time. In those cases I think you're more likely to check and let me take a stab at the pot. Also, I think the bet is more likely to represent a K than be a K, so in short, I think I have huge fold equity when I push. I don't think I was wrong about your range for the bet, its just that you had one of the hands in your range that you would call with more often. I got a bit unlucky with this one at first because I really expected you to fold, but I was still close to even money when the cards were flipped over.
When I get to HU at the end of SNGs, I win close to 2/3 of the time, mainly because I play aggressively and most opponents fold too often.
Of course, sometimes they call correctly and I still win.