Problem is the usage of vmware is different for each person. A lot of people use it/set it up differently.
1. Some people just use vmware
2. Some people use vmware and ***
3. Some people use vmware, change hardwareid and/or mac address
4. Some people do 2 and 3
When I first got hit with a ban, I lost 5 accounts on one computer (3 were running on another that were unbanned). 2 were in vmware, 3 were ran regular. But i was just learning how to bot, so I was using no. 1 from above, which isn't a strong case for vmware.
I'm currently using the method in 3, 1/7 bots were banned in the recent hit.
I don't believe they ban by IP because of apartments, colleges, etc. I do believe that by setting up all these different ids and what not, it MIGHT reduce the chance of account linking when they flag an initial account. It's all speculative I know, but if I lose all my bots I have up right now in one hit, i'm stopping with vmware.