probably yes, assuming that not both description types are completely showing free text (then you probably need some kind of sentiment analysis).
I' not sure what you mean with 'script placed', is this already one of / the only successful description?
You could create a table of your defined successful descriptions:
F1, 'Successful' as F2
applymap('DESCTABLE', CallDescription, 'Unsuccessful') as Status,
Thus, if all successful descriptions are listed in the mapping table, you will create a Status field only having two possible states, Successful and Unsuccessful from that.
This will allow you to directly compare your successful vs unsuccesful calls.
Hope this helps,