Of course my tracert is different(I'm in Nebraska), but you should see a large jump of ping on one of the routers. Your modems are Docsis 3, so they aren't the issue unless you see high pings at the 2nd hop.
From your picture I can see that your third hop is fine with ping but your problem is on the 4th hop, and this would be TWC's fault.
In ping plotter you should be able to see past tracroutes to google(on top), by clicking where it shows the high pings it should show exactly where the ping is going up that high, but as I'm suspecting its hop 4.
EDIT: You should post your signals, they should be located here: »192.168.100.1/