Interesting. It requires a slight shift in mental perspective (for some reason the two-variable way makes more sense to me), but I can definitely see how this would make the math much easier. Just ignore absolute bet and pot sizes, and relate everything to the bet size (limit) or pot size (no limit).

I was too hung up on being able to plug in absolute sizes for the pot and bet. Which doesn't make sense, since we don't care about absolute sizes, we only ever care about relative sizes anyway. So it makes the math easier, and fits with the concepts of the game. OK, I'm sold.