It would appear to be the other way round. As I understand it, the 195 is the problem. It only makes money when operating the charter flights! Even full bucket and spades see route losses over the year/season!
This is of interest as TRIP in Brazil I understand have just canned their 175s as they found those to be the problem. it seems, perhaps, that only one EJET, not both is the way forward depending on the peculiarities of your airline's market segment.