Yup
It's a combination of art and luck, it's not a hard science IHMO. You may have to call several times. If you have reference numbers, don't wait for the letter to call. Have your arguments lined up (been with chase for years, spend a lot, pay my bill on time, loyal customer, willing to transfer balance from card x, willing to close card y etc. etc.). Call first about the card(s) you want to get approved for the most (e.g. Sapphire 50k to match to 100k). Be nice to the phone reps, and don't give up.
Good luck, please keep us posted on how you fare.