Zoom - Scroll Wheel
In Illustrator CC the program seems hardwired to not listen to the tablet settings about scroll wheel zoom or even touch pad zoom. There are lots of people online complaining about this and trying to find work arounds.
I suggest just creating a hard wired button like photoshop did to fix this issue.
This wasn't an issue with Illustrator CS4, so I'm not sure what changed.
Please accept my sincere apology for the inconvenience. Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator