Shorten the front lines
Push bar away from you
= same result
You can only achieve so much with this method.
At the end of the day if the design of the kite is such that it sits further back in the window don't expect miracles by shortening the front lines and still have good performance.
It's not the same thing. When you adjust the bridle you're changing the effective point of where the front lines go to on the leading edge. Imagine and extreme example where you remove the bridle and attach both front line to the centre of the kite, say the pump loop. Your kite probably won't fly now because it's angle of attack will be so low the it will flap around on the beach. Now move the front line back to a few inches above the break lines. The kite will probably just stall all the time, or maybe fly fully powered. I don't suggest trying this, just think about what would happen if you did. The other posters are suggesting a much more subtle version of the above. RRD kites come with this adjustment on them, some others might too. It's true you can't really do much about the shape of the kite, and it's not going to fly well if it's more depowered than the max it was designed for, but I still say you can get something out of it.