Over development would result in increased contrast, highlights would increase in density but shadows would not.
This appears to me to be over exposure. Contrast is not too high (might even be a little flat) and shadows are full also.
The rebate area looks a bit fogged too, which could confuse the exposure issue and would flatted the effective contrast (shadows would be fogged as well, making over exposure difficult to say for sure).
Also, one software's "raw scan" may not be the same as another's.