Word choice
Example:

Our data analysis tells us that salespeople are pushing the new models like crazy and ignoring all the other stuff we sell.

(Sorry, that response is incorrect. The phrases pushing new models like crazy and all the other stuff are informal expressions that do not fit with the formal tone of the sentence.)

Our data analysis tells us that salespeople are focusing on selling the new models instead of our other products.

(Correct. This sentence maintains a consistently formal tone.)