Don't forget most passengers, some of whom will read your comments, don't know anything about flying or engines. If you say they're poor what does that mean to them?
S'funny. I thought the 175 was the STD version and not the LR like the 195 is. In which case the range is, apparently, very similar.
With a MTOM of 37.5 tonnes and a full passenger load you can only get 8 tonnes of fuel on. Consequently with full fuel you'll only get 77 passengers on and that's before you take into account Flybe's reduced MTOM which is 2.5 tonnes less.
How far can you go on 5.5 tonnes of fuel? Not the Canaries.
8 tonnes?