With a clean break and superglue usually you can't see anything. Chips are the worst IMO. I have a 35th anniversary Silvestri Red Sonja that I chipped 3 pieces of her boot and I tried to glue them on and it is noticeable if you look close. I am just awful at these things. I will probably have to send her somewhere and just get her repainted at some point.
Howzit Tnovak, Ave's apoxie sculpt and sandpaper would fix that, seriously any one who puts in the effort would be more than surprised at what can be done with apoxie sculpt, problem would be to match and blend colors.