That's important. It's Duncan's job to help Anderson, just like it's Splitter's job to protect Tim. Anderson looks like he'll need a fair bit of help from the bigs, but the Spurs are great at giving it. More importantly, once Kyle gets the help he needs, he'll be able to use his length and intelligence to make a lot of steals and blocks.
I wouldn't be remotely surprised to see Anderson with an elite DRtg in a few years, and even a very strong dRAPM if he can figure out how to stop overhelping.