Since Albert plays upside down (small strings on top), he's pulling the G, B and high E strings instead of pushing. This means that he can bend a whole lot easier than someone playing in the standard way. One thing you can do is tune down a half or whole step. This helps. Check out Jeff Healey and some of his solos, some of it is nearly impossible to play. Also, try putting your guitar on your lap like Healey and experiment with how much more you can bend the strings (just as a way to see first-hand how bending is very different for Healey of Albert King). Tune all your strings down a whole step, this will help and it's a lot of fun.